I have have sold and still do for that matter on eBay as part of my business. Unfortunately the days of using eBay as a platform to run or supliment a business or make money is long gone. You may already know this but if you don't, large companies liek Sears, Bosch, Delta, and distributors for many sporting goods manufactures have taken over that venue for eCommerce sales. It is very hard to make a profit when facing those odds.
One thing positive that eBay did (and it's the only thing I can think of), is if your shipping / handling cost is way out of line as compared to other like items that have sold, they will call your hand on it. This too can be frustrating as I sold a item and preset the shipping to 18.50. The shipping actually cost me 18.75 however, eBay was all over me for sevearl days over that matter, saying that it was not in line with shipping cost of other recently sold like items.
I have had the same experience that ben2go mentions and, don't forget, you still have to fork over funds to list that no sell on eBay. I am becoming more in agreement with those like KMixson
To each his own, but you may want to consider Craigslist.org, Kijii.com. Amazon.com and even the "Penny Saver" paper or Trading Post if there is one in your locale.
Not too long ago one of my friends who did business on eBay referred to eBay as " evil Bay"; I wonder if he isn't pretty close to right on that issue.