I occasionally make some extra money on Ebay, but I don't make a career out of it. A few months ago my work tossed out three copies of some old software still in the shrink wrap. I took them home and placed one of them on Ebay with a $100 buy it now. I was floored that it sold in a few hours, I ended up selling the other two copies to someone for $150 each. That's $400 extra just for picking something out of the trash. You never know what will sell on Ebay, but now I keep a much closer eye on the trash bins at work.
But yes I've noticed the fees edging up, there market is saturated, the only to can make ever higher profits is by raising there fees.