You're much better off buying a domain name and setting up a site outside of ebay.
As you sell on ebay, drive those customers to your site instead of making ebay more money.
If you want to see how it's done, check out the ebay seller 'BUY' which is really Buy.com
Once you buy something from BUY at ebay, you will get daily emails promoting specials at Buy.com.
BUY at ebay pays no listing fees and a 1.5% final value fee. In return for that super deal from ebay, they drive every customer they find at ebay away from ebay for future sales.
The management at ebay is a ship of fools...