diff --git a/money.lua b/money.lua
index ca6b894..d2fe4b2 100644
--- a/money.lua
+++ b/money.lua
@@ -83,13 +83,13 @@ function m.from_string(value)
 	local gold = tonumber(({strfind(value, '(%d*%.?%d+)g')})[3])
 	local silver = tonumber(({strfind(value, '(%d*%.?%d+)s')})[3])
 	local copper = tonumber(({strfind(value, '(%d*%.?%d+)c')})[3])
---	if not gold and not silver and not copper then return end
+	if not gold and not silver and not copper then return end
 
 	-- test that there are no extra characters (other than spaces)
 	value = gsub(value, '%d*%.?%d+g', '', 1)
 	value = gsub(value, '%d*%.?%d+s', '', 1)
 	value = gsub(value, '%d*%.?%d+c', '', 1)
-	if strfind(value, '%S') then return 0 end
+	if strfind(value, '%S') then return end
 	
 	return m.from_GSC(gold or 0, silver or 0, copper or 0)
 end
diff --git a/post_frame.lua b/post_frame.lua
index 4bbdde5..266bf9e 100644
--- a/post_frame.lua
+++ b/post_frame.lua
@@ -62,9 +62,9 @@ end
 
 function private.get_unit_start_price()
     if UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == BUYOUT_MODE then
-        return Aux.money.from_string(private.unit_buyout_price:GetText())
+        return Aux.money.from_string(private.unit_buyout_price:GetText()) or 0
     else
-        return Aux.money.from_string(private.unit_start_price:GetText())
+        return Aux.money.from_string(private.unit_start_price:GetText()) or 0
     end
 end
 
@@ -76,7 +76,7 @@ end
 
 function private.get_unit_buyout_price()
     if UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == BUYOUT_MODE or UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == FULL_MODE then
-        return Aux.money.from_string(private.unit_buyout_price:GetText())
+        return Aux.money.from_string(private.unit_buyout_price:GetText()) or 0
     else
         return 0
     end
@@ -414,9 +414,15 @@ function public.on_load()
         editbox:SetScript('OnTextChanged', function()
             if selected_item then
                 local settings = private.read_settings()
-                settings.start_price = Aux.money.from_string(this:GetText())
+
+                local input = Aux.money.from_string(this:GetText())
+                if input then
+                    settings.start_price = input
+                end
+                input = input or 0
+
                 local historical_value = Aux.history.value(selected_item.key)
-                private.start_price_percentage:SetText(historical_value and Aux.auction_listing.percentage_historical(Aux.round(settings.start_price / historical_value * 100)) or '---')
+                private.start_price_percentage:SetText(historical_value and Aux.auction_listing.percentage_historical(Aux.round(input / historical_value * 100)) or '---')
                 private.write_settings(settings)
             end
             refresh = true
@@ -440,7 +446,7 @@ function public.on_load()
             this:HighlightText()
         end)
         editbox:SetScript('OnEditFocusLost', function()
-            this:SetText(Aux.money.to_string(Aux.money.from_string(this:GetText()), true, nil, 3))
+            this:SetText(Aux.money.to_string(Aux.money.from_string(this:GetText()) or 0, true, nil, 3))
         end)
         do
             local label = Aux.gui.label(editbox, 13)
@@ -463,9 +469,15 @@ function public.on_load()
         editbox:SetScript('OnTextChanged', function()
             if selected_item then
                 local settings = private.read_settings()
-                settings.buyout_price = Aux.money.from_string(this:GetText())
+
+                local input = Aux.money.from_string(this:GetText())
+                if input then
+                    settings.buyout_price = input
+                end
+                input = input or 0
+
                 local historical_value = Aux.history.value(selected_item.key)
-                private.buyout_price_percentage:SetText(historical_value and Aux.auction_listing.percentage_historical(Aux.round(settings.buyout_price / historical_value * 100)) or '---')
+                private.buyout_price_percentage:SetText(historical_value and Aux.auction_listing.percentage_historical(Aux.round(input / historical_value * 100)) or '---')
                 private.write_settings(settings)
             end
             refresh = true
@@ -487,7 +499,7 @@ function public.on_load()
             this:HighlightText()
         end)
         editbox:SetScript('OnEditFocusLost', function()
-            this:SetText(Aux.money.to_string(Aux.money.from_string(this:GetText()), true, nil, 3))
+            this:SetText(Aux.money.to_string(Aux.money.from_string(this:GetText()) or 0, true, nil, 3))
         end)
         do
             local label = Aux.gui.label(editbox, 13)
@@ -639,14 +651,14 @@ function private.update_recommendation()
         private.hide_checkbox:Hide()
     else
         private.mode_dropdown:Show()
-        private.unit_start_price:Hide()
-        private.unit_buyout_price:Hide()
         private.unit_start_price:ClearAllPoints()
         private.unit_buyout_price:ClearAllPoints()
         if UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == BUYOUT_MODE then
+            private.unit_start_price:Hide()
             private.unit_buyout_price:SetPoint('TOPRIGHT', -65, -100)
             private.unit_buyout_price:Show()
         elseif UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == BID_MODE then
+            private.unit_buyout_price:Hide()
             private.unit_start_price:SetPoint('TOPRIGHT', -65, -100)
             private.unit_start_price:Show()
         elseif UIDropDownMenu_GetSelectedValue(private.mode_dropdown) == FULL_MODE then
diff --git a/scan_util.lua b/scan_util.lua
index a9acae3..54eb592 100644
--- a/scan_util.lua
+++ b/scan_util.lua
@@ -133,7 +133,7 @@ m.filters = {
     ['min-bid'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return auction_record.unit_bid_price >= amount
@@ -147,7 +147,7 @@ m.filters = {
     ['min-buyout'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return auction_record.unit_buyout_price >= amount
@@ -161,7 +161,7 @@ m.filters = {
     ['max-bid'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return auction_record.unit_bid_price <= amount
@@ -175,7 +175,7 @@ m.filters = {
     ['max-buyout'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return auction_record.buyout_price > 0 and auction_record.unit_buyout_price <= amount
@@ -221,7 +221,7 @@ m.filters = {
     ['bid-profit'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return Aux.history.value(auction_record.item_key) and Aux.history.value(auction_record.item_key) * auction_record.aux_quantity - auction_record.bid_price >= amount
@@ -235,7 +235,7 @@ m.filters = {
     ['buyout-profit'] = {
         arity = 1,
         test = function(amount)
-            amount = Aux.money.from_string(amount or '')
+            amount = Aux.money.from_string(amount or '') or 0
             if amount > 0 then
                 return function(auction_record)
                     return Aux.history.value(auction_record.item_key) and Aux.history.value(auction_record.item_key) * auction_record.aux_quantity - auction_record.buyout_price >= amount