Translate from English to Croatia?

I go on a website called Neopets, accidently priced an item too cheap (by oh...about 34,000!) I saw that the person probably speaks only Croatian. Can somebody please tell me how to say "Can you put the paint brush into the trades and I'll give you your money back please? I accidently forgot to add a zero on the price in the shop." in Croatian please? There's an item I've been saving up for and this paint brush was going to help me finally get it. :(