Its certainly a mix. The site brought motorbike parts back into sane prices though. There was a time that we had breakers in the UK selling second hand parts for more than the list price of new parts. I even called one, told them the list price and asked if they wanted to make a sensible deal....they hung up on me!
Some people just don't know the value of things. Some things go for nothing, some things way over the odds. I have sold items in auctions that fit into both categories.