Auction Script

I need an auction script similar to ebay. Note you can use any language to develop the website and BUT must use a MySQL database. The auction script should allow sellers to list items in the normal mode as well as stores. Unlike ebay the search should also search the store items. Payment to be handled by Paypal. Instead of a post pay system like ebay where sellers pay ebay after using the system, i need a prepay system where the seller pays before listing. (prepay credit system like prepaid phones). attached are some of the features i would like. PM me for more details.