One reason prices have gone up is because of eBays keyword price suggestion tool. For example, if I describe my item as a silk purse, eBay will recommend I price it at their silk purse price. Even if I’m mistaken, and the item is actually only a sow’s ear. This is where being over educated as a buyer can pay dividends, or cost in dummy tax, for those who aren’t quite sure the nuanced differences between those two items. The seller who doesn’t know what he has, will be willing to list the item for a hundred bucks if EBay gives a hundred dollar price suggestion based on his title of “silk purse”. Just as the uninformed buyer may well pay a hundred bucks, and be sorely disappointed when he gifts the item to his blushing bride. But I don’t know that anybody really buys silk purses anymore.