Here is basically how it works. The scammer gets a new user ID and uses bots to find 1 cent auctions, like ebooks. These are downloaded and usually the seller’s entire system is automated. So the scammer can achieve feedback rather quickly. They will get about fifteen to twenty feedbacks, costing 20 cents. They start selling expensive items and of coarse they don’t ship the items after the sale. I guess the moral of the story is to check out the sellers feedback to see if it was accumulated buying very cheap items.