Doesn't matter how many people are on eBay. The item will go for (about) its actual value. If you have no idea what an item is worth, then you probably shouldn't be bidding on it. I buy a lot of cell phones on eBay. The prices always end up about where I expect them to. Even when there are many people after the same phone, they won't spend more than they can pay elsewhere. Collectors can be different. They may pay excessive amounts to acquire a rare item. If you fall into that category, then you probably don't have deep enough pockets.