Dude, where have you been? eBay hasn't been an 'auction site' for years!! I remember when it used to be an auction site. (Heck. I had a 4 digit eBay ID back in the day.) That was a looooong time ago.
Today true auctions are a very very small percentage of eBay.
Today eBay's just an extention of corporate catalog sales. That's why they have to allow the dynamic off-server content that leads to the cross-site scripting issues. Corporate pass-thru sales are the bulk of eBay's business these days.
Seriously. Pick up a dead tree catalog. Now pick a page at random. Now search in Ebay for any product listed on that page. You'll see that product on eBay. It will be for sale from that company and the 'BuyItNow' price will be the same price you see in the dead tree catalog.
That's what eBay is today. The small business guys started it, posting slow moving inventory for sale, then moving on to listing more and more new items. Today they list items they don't even have in stock but can direct ship to the buyer.
Now the national and international folks have moved in.
Auction site? Meh. eBay isn't an auction site anymore. Sorry.