After over 200 positive experiences with eBay, I finally had a worst case experience with a seller this week. Seller hasn't shipped the item in the 10 days since I purchased it. Even sent me a bogus tracking number. So I filed a fraud report with eBay and Paypal on him tonight. We'll see if that gets his attention.
I think he may have been dragging his feet because he felt I didn't pay as much as he wanted to sell the item for. Too bad. I'll be getting my money back if he doesn't want to respond.
Last week I had my first (false/retaliatory) negative feedback from a non-paying buyer. Neither experience is much fun, but I am confident I'll get the last laugh on today's transaction.