diff --git a/src/actions/StoreAction.lua b/src/actions/StoreAction.lua
index b7953c8..64d1b04 100644
--- a/src/actions/StoreAction.lua
+++ b/src/actions/StoreAction.lua
@@ -290,7 +290,7 @@ function _M.shopBuyRpc(agent , data)
 		return 1 
 	end
 
-	local cost = {[dataSet.icon] = dataSet.cost * count * ((dataSet.disount or 10) / 10)}
+	local cost = {[dataSet.icon] = math.ceil(dataSet.cost * count * ((dataSet.disount or 10) / 10))}
 
 
 	local desc = "unknowShop"
--
libgit2 0.21.2