diff --git a/README.md b/README.md
index aca29b2..9d59e61 100644
--- a/README.md
+++ b/README.md
@@ -64,8 +64,9 @@ The most advanced auction house addOn for the 1.12 client with some features mor
 **/aux uc** (Toggles automatic undercutting.)<br/>
 **/aux ignore owner** (Disables waiting for owner names when scanning. Recommended)<br/>
 **/aux post bid** (Adds a bid price listing to the post tab)<br/>
-**/aux crafting cost** (Toggles the crafting price information)<br/>
 **/aux post duration _hours_** (Sets the default auction duration to _2_/_8_/_24_ hours)<br/>
+**/aux post stack** (Toggles stack size saving per item in the post tab)<br/>
+**/aux crafting cost** (Toggles the crafting price information)<br/>
 **/aux sharing** (Enable or disable auction data sharing as described above)<br/>
 **/aux theme** (Switch between the two themes)<br/>
 **/aux purchase summary** (Toggles the purchase summary window that tracks gold spending)<br/>
diff --git a/aux-addon.lua b/aux-addon.lua
index 77e7045..c77aecf 100644
--- a/aux-addon.lua
+++ b/aux-addon.lua
@@ -67,15 +67,15 @@ function handle.LOAD()
         crafting_cost = true,
         post_bid = false,
         post_duration = post.DURATION_24,
-		post_stack = true,
-	undercut = true,
+        post_stack = true,
+        undercut = true,
         price_per_unit = false,
         items = {},
         item_ids = {},
         auctionable_items = {},
         merchant_buy = {},
         merchant_sell = {},
-		sharing = true,
+        sharing = true,
         theme = 'blizzard',
         purchase_summary = true,
     })
diff --git a/tabs/post/core.lua b/tabs/post/core.lua
index b6b6bf9..332cd8f 100644
--- a/tabs/post/core.lua
+++ b/tabs/post/core.lua
@@ -16,7 +16,7 @@ local gui = require 'aux.gui'
 
 local tab = aux.tab 'Post'
 
-local settings_schema = {'tuple', '#', {duration='number'}, {start_price='number'}, {buyout_price='number'}, {hidden='boolean'}}
+local settings_schema = {'tuple', '#', {duration='number'}, {start_price='number'}, {buyout_price='number'}, {hidden='boolean'}, {stack_size='number'}}
 
 local scan_id, inventory_records, bid_records, buyout_records = 0, {}, {}, {}
 
@@ -27,7 +27,7 @@ refresh = true
 selected_item = nil
 
 function get_default_settings()
-	return T.map('duration', aux.account_data.post_duration, 'start_price', 0, 'buyout_price', 0, 'hidden', false)
+	return T.map('duration', aux.account_data.post_duration, 'start_price', 0, 'buyout_price', 0, 'hidden', false, 'stack_size', 1)
 end
 
 function aux.handle.LOAD2()
@@ -463,11 +463,17 @@ function update_item(item)
 		stack_size_slider:SetMinMaxValues(1, min(selected_item.max_stack, selected_item.aux_quantity))
 	end
 		
-	if not aux.account_data.post_stack then	
-		stack_size_slider:SetValue(math.random(1,ii))
-	else
+	if not aux.account_data.post_stack then
+		-- post_stack OFF: Always use full/max stack size
 		stack_size_slider:SetValue(aux.huge)
-		--stack_size_slider:SetValue(1)
+	else
+		-- post_stack ON: Use saved stack size if available, otherwise full stack
+		local settings = read_settings(selected_item.key)
+		if settings.stack_size and settings.stack_size > 0 and settings.stack_size <= ii then
+			stack_size_slider:SetValue(settings.stack_size)
+		else
+			stack_size_slider:SetValue(aux.huge)
+		end
 	end
 
     quantity_update(true)
diff --git a/tabs/post/frame.lua b/tabs/post/frame.lua
index 1c2983b..acbbcf2 100644
--- a/tabs/post/frame.lua
+++ b/tabs/post/frame.lua
@@ -165,14 +165,33 @@ function aux.handle.INIT_UI()
         slider:SetScript('OnValueChanged', function()
             quantity_update(true)
         end)
+        local user_is_dragging = false
+        local editbox_has_user_focus = false
+        slider:SetScript('OnMouseDown', function()
+            user_is_dragging = true
+        end)
+        slider:SetScript('OnMouseUp', function()
+            -- Only save stack size if user was actively dragging
+            if selected_item and aux.account_data.post_stack and user_is_dragging then
+                local settings = read_settings()
+                settings.stack_size = slider:GetValue()
+                write_settings(settings)
+            end
+            user_is_dragging = false
+        end)
         slider.editbox.change = function()
             slider:SetValue(this:GetNumber())
             quantity_update(true)
-            if selected_item then
+            -- Only save if user is actively typing (has focus)
+            if editbox_has_user_focus and selected_item and aux.account_data.post_stack then
                 local settings = read_settings()
+                settings.stack_size = slider:GetValue()
                 write_settings(settings)
             end
         end
+        slider.editbox:SetScript('OnEnterPressed', function()
+            slider.editbox:ClearFocus()
+        end)
         slider.editbox:SetScript('OnTabPressed', function()
             if IsShiftKeyDown() then
                 unit_buyout_price_input:SetFocus()
@@ -182,6 +201,13 @@ function aux.handle.INIT_UI()
                 unit_start_price_input:SetFocus()
             end
         end)
+        -- Hook into gui framework's focus system
+        slider.editbox.focus_gain = function()
+            editbox_has_user_focus = true
+        end
+        slider.editbox.focus_loss = function()
+            editbox_has_user_focus = false
+        end
         slider.editbox:SetNumeric(true)
         slider.editbox:SetMaxLetters(3)
         slider.label:SetText('Stack Size')