What is the best shopping script?

Yellow, I'm looking for a shopping script, but not just regular cart. I need that user could sell his own items, like on http://www.istockphoto.com I wonder what script do they use?

category: Search Engine Optimatization | tags: scripts shopping | answers(0) | Asked 1 Year, 11 Months, 3 Hours, 19 Minutes ago. | author: guile

answer!