I purchased 350z seats for $500 that I never got. Ebay insurance refunded $175. Purchased a 5 channel receiver that "worked" but not correctly. Sold a Lionel car and after the sale the purchaser blackmailed me into refunding 25%. Other than these 3, my 300 other transactions have gone well.

As for the fees on shipping, this is response to sellers offering products for pennies with high shipping fees.

I am real careful whom I purchase from now and use craigslist.com for most of my transactions. None of my auto stuff seems to sell through the respective forums.

Yea, the fees are getting up there but there's no real competition- craigslist.com; boocoo.com? My big "*****" is the search function. Sellers are able to list their universal products as fitting specific models. I have a growing list of sellers omitted form my stored searches. And for my typical searches the real auctions can be as low as 5%.