diff --git a/aux-addon.lua b/aux-addon.lua
index 2ae6aa2..a63dae2 100644
--- a/aux-addon.lua
+++ b/aux-addon.lua
@@ -67,6 +67,7 @@ function handle.LOAD()
         post_bid = false,
         post_duration = post.DURATION_24,
 		post_stack = true,
+	undercut = true,
         items = {},
         item_ids = {},
         auctionable_items = {},
diff --git a/core/slash.lua b/core/slash.lua
index 83a63d7..cb3978c 100644
--- a/core/slash.lua
+++ b/core/slash.lua
@@ -22,6 +22,9 @@ function SlashCmdList.AUX(command)
     	local scale = tonumber(arguments[2])
 	    aux.frame:SetScale(scale)
 	    aux.account_data.scale = scale
+    elseif arguments[1] == 'uc' then
+        aux.account_data.undercut = not aux.account_data.undercut
+	    aux.print('undercutting ' .. status(aux.account_data.undercut))
     elseif arguments[1] == 'ignore' and arguments[2] == 'owner' then
 	    aux.account_data.ignore_owner = not aux.account_data.ignore_owner
         aux.print('ignore owner ' .. status(aux.account_data.ignore_owner))
@@ -77,6 +80,7 @@ function SlashCmdList.AUX(command)
 		aux.print('Usage:')
 		aux.print('- scale [' .. aux.color.blue(aux.account_data.scale) .. ']')
 		aux.print('- ignore owner [' .. status(aux.account_data.ignore_owner) .. ']')
+		aux.print('- uc [' .. status(aux.account_data.undercut) .. ']')
 		aux.print('- post bid [' .. status(aux.account_data.post_bid) .. ']')
         aux.print('- post duration [' .. aux.color.blue(aux.account_data.post_duration / 60 * 3 .. 'h') .. ']')
 		aux.print('- post stack [' .. status(aux.account_data.post_stack) .. ']')
@@ -94,4 +98,4 @@ function SlashCmdList.AUX(command)
             aux.color[aux.account_data.theme == 'modern' and 'green' or 'red']('modern') .. ']')
 		aux.print('- show hidden [' .. status(aux.account_data.showhidden) .. ']')
     end
-end
\ No newline at end of file
+end
diff --git a/tabs/post/core.lua b/tabs/post/core.lua
index b2f8897..b6b6bf9 100644
--- a/tabs/post/core.lua
+++ b/tabs/post/core.lua
@@ -390,7 +390,9 @@ end
 function undercut(record, stack_size, stack)
     local price = ceil(record.unit_price * (stack and record.stack_size or stack_size))
     if not record.own then
-	    price = price - 1
+        if aux.account_data.undercut then
+            price = price - 1
+        end
     end
     return price / stack_size
 end