The best way to sell on eBay is with a set price listing, not a bid war. You can sell up to 50 items on "Buy It Now" with no listing charges and get the price you want. Yes, it sometimes takes a bit for them to sell, and you should revisit the items now and then and adjust prices accordingly, but I think it's the only way to sell unless it's a very wanted item that people are constantly having "bid wars" over.

I've been an eBay seller for right at two years. While I still have a regular job, I'm happy with how I've done. Feel free to ask any questions you'd like.