diff --git a/core.lua b/core.lua
index dcf4581..b4e6bb0 100644
--- a/core.lua
+++ b/core.lua
@@ -1,4 +1,4 @@
-AuxVersion = '2.4.9'
+AuxVersion = '2.4.10'
 AuxAuthors = 'shirsig; Zerf; Zirco (Auctionator); Nimeral (Auctionator backport)'
 
 Aux = {
diff --git a/info.lua b/info.lua
index d4c06f5..a1f97c2 100644
--- a/info.lua
+++ b/info.lua
@@ -46,6 +46,8 @@ function public.container_item(bag, slot)
 
     local texture, count, locked, quality, readable, lootable = GetContainerItemInfo(bag, slot) -- quality not working?
     local tooltip = public.tooltip(function(tt) tt:SetBagItem(bag, slot) end)
+    local charges = private.item_charges(tooltip)
+    local aux_quantity = charges or count
 
     return {
         item_id = item_id,
@@ -65,6 +67,7 @@ function public.container_item(bag, slot)
         slot = item_info.slot,
         quality = item_info.quality,
         max_stack = item_info.max_stack,
+        aux_quantity = aux_quantity,
 
         count = count,
         locked = locked,
@@ -72,7 +75,7 @@ function public.container_item(bag, slot)
         lootable = lootable,
 
         tooltip = tooltip,
-        charges = private.item_charges(tooltip),
+        charges = charges,
     }
 end
 
diff --git a/post.lua b/post.lua
index 9431ab6..c77125c 100644
--- a/post.lua
+++ b/post.lua
@@ -11,10 +11,12 @@ end)()
 
 local state
 
-local post_auction, stop, process
+function private.process()
+	if state.posted < state.count or state.partial then
+		if state.posted == state.count then
+			state.partial = false
+		end
 
-function process()
-	if state.posted < state.count then
 		local stacking_complete
 		local stack_slot
 		
@@ -28,23 +30,25 @@ function process()
 		)
 		
 		controller().wait(function() return stacking_complete end, function()
-		if stack_slot then
-			post_auction(stack_slot, function()
-				state.posted = state.posted + 1
-				return process()
-			end)
-		else
-			return stop()
-		end
+
+			if stack_slot and Aux.info.container_item(stack_slot.bag, stack_slot.bag_slot).aux_quantity <= state.stack_size then
+				private.post_auction(stack_slot, function()
+					state.posted = state.posted + 1
+					return private.process()
+				end)
+			else
+				return private.stop()
+			end
+
 		end)
 	else
-		return stop()
+		return private.stop()
 	end
 end
 
 function public.stop(k)
 	Aux.control.on_next_update(function()
-		stop()
+		private.stop()
 		
 		if k then
 			return k()
@@ -52,7 +56,7 @@ function public.stop(k)
 	end)
 end
 
-function stop()
+function private.stop()
 	controller().reset()
 	if state then
 		local callback = state.callback
@@ -66,36 +70,34 @@ function stop()
 	end
 end
 
-function post_auction(slot, k)
+function private.post_auction(slot, k)
 	ClearCursor()
 	ClickAuctionSellItemButton()
 	ClearCursor()
 	PickupContainerItem(slot.bag, slot.bag_slot)
 	ClickAuctionSellItemButton()
 	ClearCursor()
-	StartAuction(state.bid, state.buyout, state.duration)
+	local stack_size = Aux.info.container_item(slot.bag, slot.bag_slot).aux_quantity
+	StartAuction(max(1, state.unit_start_price * stack_size), state.unit_buyout_price * stack_size, state.duration)
 	controller().wait(function() return not GetContainerItemInfo(slot.bag, slot.bag_slot) end, k)
 end
 
-function public.start(item_key, stack_size, duration, bid, buyout, count, callback)
+function public.start(item_key, stack_size, duration, unit_start_price, unit_buyout_price, count, allow_partial, callback)
 	Aux.control.on_next_update(function()
-		stop()
-		
-		ClearCursor()
-		ClickAuctionSellItemButton()
-		ClearCursor()
+		private.stop()
 		
 		state = {
             item_key = item_key,
 			stack_size = stack_size,
 			duration = duration,
-			bid = bid,
-			buyout = buyout,
+			unit_start_price = unit_start_price,
+			unit_buyout_price = unit_buyout_price,
 			count = count,
+			partial = allow_partial,
 			posted = 0,
 			callback = callback,
 		}
 		
-		return process()
+		return private.process()
 	end)
 end
\ No newline at end of file
diff --git a/post_frame.lua b/post_frame.lua
index 9f8b783..ae559ba 100644
--- a/post_frame.lua
+++ b/post_frame.lua
@@ -18,6 +18,7 @@ function private.load_settings(item_record)
         stack_size = item_record.charges and 5 or item_record.max_stack,
         start_price = 0,
         buyout_price = 0,
+        partial_stacks = true,
         hidden = false,
         pricing_model = AUTO,
     }
@@ -161,7 +162,7 @@ function public.on_load()
     do
         local slider = Aux.gui.slider(AuxSellParameters)
         slider:SetValueStep(1)
-        slider:SetPoint('TOPLEFT', 16, -75)
+        slider:SetPoint('TOPLEFT', 16, -74)
         slider:SetWidth(190)
         slider:SetScript('OnValueChanged', function()
             private.quantity_update()
@@ -231,9 +232,25 @@ function public.on_load()
         slider.label:SetTextHeight(13)
         private.stack_count_slider = slider
     end
+    do
+        local checkbox = CreateFrame('CheckButton', nil, AuxSellInventory, 'UICheckButtonTemplate')
+        checkbox:SetWidth(22)
+        checkbox:SetHeight(22)
+        checkbox:SetPoint('TOPLEFT', private.stack_count_slider, 'BOTTOMLEFT', -3, -7)
+        checkbox:SetScript('OnClick', function()
+            local settings = private.load_settings()
+            settings.partial_stacks = this:GetChecked()
+            private.update_recommendation()
+            refresh = true
+        end)
+        local label = Aux.gui.label(checkbox, 13)
+        label:SetPoint('LEFT', checkbox, 'RIGHT', 2, 1)
+        label:SetText('Allow partial stacks')
+        private.partial_stacks_checkbox = checkbox
+    end
     do
         local dropdown = Aux.gui.dropdown(AuxSellParameters)
-        dropdown:SetPoint('TOPLEFT', private.stack_count_slider, 'BOTTOMLEFT', 0, -25)
+        dropdown:SetPoint('TOPLEFT', private.stack_count_slider, 'BOTTOMLEFT', 0, -41)
         dropdown:SetWidth(90)
         dropdown:SetHeight(10)
         local label = Aux.gui.label(dropdown, 13)
@@ -284,7 +301,6 @@ function public.on_load()
                     settings.start_price = Aux.money.from_string(this:GetText())
                 end
             end
-            private.validate_parameters()
         end)
         editbox:SetScript('OnTabPressed', function()
             if IsShiftKeyDown() then
@@ -321,7 +337,6 @@ function public.on_load()
                     settings.buyout_price = Aux.money.from_string(this:GetText())
                 end
             end
-            private.validate_parameters()
         end)
         editbox:SetScript('OnTabPressed', function()
             if IsShiftKeyDown() then
@@ -369,8 +384,6 @@ function public.on_open()
     private.start_price:SetText(Aux.money.to_string(0))
     private.buyout_price:SetText(Aux.money.to_string(0))
 
-    private.validate_parameters()
-
     private.update_inventory_records()
 
     refresh = true
@@ -383,43 +396,46 @@ function public.on_close()
 end
 
 function private.post_auctions()
-    local auction = selected_item
-	if auction then
-		local key, hyperlink, stack_size, buyout_price, stack_count = auction.key, auction.hyperlink, private.stack_size_slider:GetValue(), Aux.money.from_string(private.buyout_price:GetText()), private.stack_count_slider:GetValue()
-		local duration
-		if UIDropDownMenu_GetSelectedValue(private.duration_dropdown) == DURATION_4 then
-			duration = 2
-		elseif UIDropDownMenu_GetSelectedValue(private.duration_dropdown) == DURATION_8 then
-			duration = 3
-		elseif UIDropDownMenu_GetSelectedValue(private.duration_dropdown) == DURATION_24 then
-			duration = 4
+	if selected_item then
+        local unit_start_price = Aux.money.from_string(private.start_price:GetText()) / private.stack_size_slider:GetValue()
+        local unit_buyout_price = Aux.money.from_string(private.buyout_price:GetText()) / private.stack_size_slider:GetValue()
+        local stack_size = private.stack_size_slider:GetValue()
+        local stack_count = private.stack_count_slider:GetValue()
+        local duration = UIDropDownMenu_GetSelectedValue(private.duration_dropdown)
+		local key = selected_item.key
+
+        local duration_code
+		if duration == DURATION_4 then
+            duration_code = 2
+		elseif duration == DURATION_8 then
+            duration_code = 3
+		elseif duration == DURATION_24 then
+            duration_code = 4
 		end
 
 		Aux.post.start(
 			key,
 			stack_size,
-			UIDropDownMenu_GetSelectedValue(private.duration_dropdown),
-            Aux.money.from_string(private.start_price:GetText()),
-			buyout_price,
+			duration,
+            unit_start_price,
+            unit_buyout_price,
 			stack_count,
-			function(posted)
+            not selected_item.charges and private.partial_stacks_checkbox:GetChecked(),
+			function(posted, partial)
+                local new_auction_record
 				for i = 1, posted do
-					private.record_auction(key, stack_size, buyout_price, duration, UnitName('player'))
-				end
-				if existing_auctions[key] then
-					for _, entry in ipairs(existing_auctions[key]) do
-						if entry.buyout_price == buyout_price and entry.stack_size == stack_size then
-							existing_auctions[key].selected = entry
-                            refresh = true
-						end
-					end
-				end
-
+                    new_auction_record = private.record_auction(key, stack_size, unit_buyout_price, duration_code, UnitName('player'))
+                end
+                if partial then
+                    new_auction_record = private.record_auction(key, partial, unit_buyout_price, duration_code, UnitName('player'))
+                end
+                if existing_auctions[key] then
+                    existing_auctions[key].selected = new_auction_record
+                end
                 private.update_inventory_records()
-
                 selected_item = nil
                 for _, record in ipairs(inventory_records) do
-                    if record.key == auction.key then
+                    if record.key == key then
                         private.set_item(record)
                     end
                 end
@@ -454,17 +470,24 @@ function private.select_auction()
 end
 
 function private.validate_parameters()
-    private.post_button:Disable()
 
     if not selected_item then
+        private.post_button:Disable()
         return
     end
 
     if Aux.money.from_string(private.buyout_price:GetText()) > 0 and Aux.money.from_string(private.start_price:GetText()) > Aux.money.from_string(private.buyout_price:GetText()) then
+        private.post_button:Disable()
         return
     end
 
     if Aux.money.from_string(private.start_price:GetText()) < 1 then
+        private.post_button:Disable()
+        return
+    end
+
+    if private.stack_count_slider:GetValue() == 0 and (selected_item.charges or not private.partial_stacks_checkbox:GetChecked()) then
+        private.post_button:Disable()
         return
     end
 
@@ -485,6 +508,7 @@ function private.update_recommendation()
 		private.buyout_price:Hide()
         private.stack_size_slider:Hide()
         private.stack_count_slider:Hide()
+        private.partial_stacks_checkbox:Hide()
         private.deposit:Hide()
         private.duration_dropdown:Hide()
         private.pricing_model_dropdown:Hide()
@@ -494,6 +518,7 @@ function private.update_recommendation()
         private.buyout_price:Show()
         private.stack_size_slider:Show()
         private.stack_count_slider:Show()
+        private.partial_stacks_checkbox:Show()
         private.deposit:Show()
         private.duration_dropdown:Show()
         private.pricing_model_dropdown:Show()
@@ -512,8 +537,18 @@ function private.update_recommendation()
         private.stack_size_slider.editbox:SetNumber(private.stack_size_slider:GetValue())
         private.stack_count_slider.editbox:SetNumber(private.stack_count_slider:GetValue())
 
-        -- TODO neutral AH deposit formula
-        private.deposit:SetText('Deposit: '..Aux.money.to_string(floor(selected_item.unit_vendor_price * 0.05 * (selected_item.charges and 1 or private.stack_size_slider:GetValue())) * private.stack_count_slider:GetValue() * UIDropDownMenu_GetSelectedValue(private.duration_dropdown) / 120))
+        do
+            -- TODO neutral AH deposit formula
+            local stack_size = private.stack_size_slider:GetValue()
+            local stack_count = private.stack_count_slider:GetValue()
+            local deposit = floor(selected_item.unit_vendor_price * 0.05 * (selected_item.charges and 1 or stack_size)) * stack_count * UIDropDownMenu_GetSelectedValue(private.duration_dropdown) / 120
+            if selected_item.aux_quantity < (stack_size * (stack_count + 1)) and private.partial_stacks_checkbox:GetChecked() and not selected_item.charges then
+                local partial_stack = mod(selected_item.aux_quantity, stack_size)
+                deposit = deposit + floor(selected_item.unit_vendor_price * 0.05 * partial_stack) * UIDropDownMenu_GetSelectedValue(private.duration_dropdown) / 120
+            end
+
+            private.deposit:SetText('Deposit: '..Aux.money.to_string(deposit))
+        end
 
         private.refresh_button:Enable()
 
@@ -627,9 +662,10 @@ function private.set_item(item)
         UIDropDownMenu_Initialize(private.pricing_model_dropdown, private.initialize_pricing_model_dropdown)
         UIDropDownMenu_SetSelectedValue(private.pricing_model_dropdown, settings.pricing_model)
 
-        private.stack_size_slider:SetMinMaxValues(1, selected_item.charges and 5 or selected_item.max_stack)
         private.hide_checkbox:SetChecked(settings.hidden)
+        private.partial_stacks_checkbox:SetChecked(settings.partial_stacks)
 
+        private.stack_size_slider:SetMinMaxValues(1, selected_item.charges and 5 or selected_item.max_stack)
         private.stack_size_slider:SetValue(settings.stack_size)
         private.quantity_update()
         private.stack_count_slider:SetValue(selected_item.aux_quantity) -- reduced to max possible
@@ -726,7 +762,13 @@ function private.refresh_entries()
 			end,
 			on_read_auction = function(auction_info)
 				if auction_info.item_key == item_key then
-                    private.record_auction(auction_info.item_key, auction_info.aux_quantity, auction_info.buyout_price, auction_info.duration, auction_info.owner)
+                    private.record_auction(
+                        auction_info.item_key,
+                        auction_info.aux_quantity,
+                        auction_info.buyout_price / auction_info.aux_quantity,
+                        auction_info.duration,
+                        auction_info.owner
+                    )
 				end
 			end,
 			on_abort = function()
@@ -762,31 +804,33 @@ function private.refresh()
 	end)
 end
 
-function private.record_auction(key, aux_quantity, buyout_price, duration, owner)
-	if buyout_price > 0 then
+function private.record_auction(key, aux_quantity, unit_buyout_price, duration, owner)
+	if unit_buyout_price > 0 then
 		existing_auctions[key] = existing_auctions[key] or {}
 		local entry
 		for _, existing_entry in ipairs(existing_auctions[key]) do
-			if buyout_price == existing_entry.buyout_price and aux_quantity == existing_entry.stack_size and duration == existing_entry.duration then
+			if unit_buyout_price == existing_entry.unit_buyout_price and aux_quantity == existing_entry.stack_size and duration == existing_entry.duration then
 				entry = existing_entry
 			end
-		end
-		if entry then
-			entry.count = entry.count + 1
-			entry.yours = entry.yours + (owner == UnitName('player') and 1 or 0)
-			entry.duration = max(entry.duration, duration)
-        else
-			tinsert(existing_auctions[key], {
+        end
+
+        if not entry then
+            entry = {
                 item_key = key,
-				stack_size = aux_quantity,
-				buyout_price = buyout_price,
+                stack_size = aux_quantity,
+                unit_buyout_price = unit_buyout_price,
                 duration = duration,
-				unit_buyout_price = buyout_price / aux_quantity,
-				duration = duration,
-				count = 1,
-				yours = owner == UnitName('player') and 1 or 0,
-			})
-		end
+                count = 0,
+                yours = 0,
+            }
+            tinsert(existing_auctions[key], entry)
+        end
+
+        entry.count = entry.count + 1
+        entry.yours = entry.yours + (owner == UnitName('player') and 1 or 0)
+        entry.duration = max(entry.duration, duration)
+
+        return entry
 	end
 end
 
@@ -800,6 +844,8 @@ function public.on_update()
         private.update_inventory_listing()
         private.update_auction_listing()
     end
+
+    private.validate_parameters()
 end
 
 function private.initialize_pricing_model_dropdown()
diff --git a/post_frame.xml b/post_frame.xml
index ecb8bb9..2ae047b 100644
--- a/post_frame.xml
+++ b/post_frame.xml
@@ -31,7 +31,7 @@
                         </Anchors>
                     </Frame>
                     <frame name="AuxSellParameters" inherits="AuxFrameBoxTemplate">
-                        <Size><AbsDimension y="187"/></Size>
+                        <Size><AbsDimension y="197"/></Size>
                         <Anchors>
                             <Anchor point="TOPLEFT" relativePoint="TOPRIGHT" relativeTo="AuxSellInventory"><Offset><AbsDimension x="8" y="0"/></Offset></Anchor>
                             <Anchor point="TOPRIGHT"><Offset><AbsDimension x="-4" y="0"/></Offset></Anchor>
@@ -43,7 +43,7 @@
                         </frames>
                     </frame>
                     <Frame name="AuxSellAuctions" inherits="AuxFrameBoxTemplate">
-                        <Size><AbsDimension y="207"/></Size>
+                        <Size><AbsDimension y="197"/></Size>
                         <Anchors>
                             <Anchor point="BOTTOMLEFT" relativePoint="BOTTOMRIGHT" relativeTo="AuxSellInventory"><Offset><AbsDimension x="8" y="0"/></Offset></Anchor>
                             <Anchor point="BOTTOMRIGHT"><Offset><AbsDimension x="-4" y="0"/></Offset></Anchor>
diff --git a/stack.lua b/stack.lua
index 8aa0456..e92ea8e 100644
--- a/stack.lua
+++ b/stack.lua
@@ -41,8 +41,8 @@ end
 function private.move_item(from_slot, to_slot, amount, k)
 	local size_before = private.stack_size(to_slot)
 		
-	amount = min(private.max_stack(from_slot) - private.stack_size(to_slot), amount)
-	
+	amount = min(private.max_stack(from_slot) - private.stack_size(to_slot), private.stack_size(from_slot), amount)
+
 	ClearCursor()
 	SplitContainerItem(from_slot.bag, from_slot.bag_slot, amount)
 	PickupContainerItem(to_slot.bag, to_slot.bag_slot)
@@ -99,7 +99,8 @@ function private.process()
 				state.target_size - private.stack_size(state.target_slot),
 				function()
 					return private.process()
-			end)
+				end
+			)
 		end
 	end
 		
@@ -124,11 +125,8 @@ end
 function private.stop()
 	controller().reset()
 	if state then
-		local slot
-		if state.target_slot and (private.stack_size(state.target_slot) == state.target_size or private.item_charges(state.target_slot) == state.target_size) then
-			slot = state.target_slot
-		end
-		local callback = state.callback
+
+		local callback, slot = state.callback, state.target_slot
 		
 		state = nil