eBay and bidding fun

It has been interesting to be on the seller side for eBay. I have bought plenty of things, but man I am starting to feel bad for the sellers now. I have had my second challenging discussion with a buyer. In general, each time I have sold something, people are looking to save a few dollars. First one person doesn't like the merchandise, another person emails me and wants me to drop the "Buy Now" price. And now the last one says one of the products has been opened. And without a way to definitively prove this, it places me in a touch spot. It makes you wonder...Let's just say I don't plan on selling too many more things on eBay. On a side note, the fees charged by eBay and PayPal are ridiculous! I am clearly in the wrong business ;)