Bberry, I've found that marketing and selling on the 'bay to be pretty rewarding. It seems to me that there was a thread on this recently with lots of good suggestions.
My only warning is to check shipping prices before quoting. I haven't shipped a bike in a couple of months, but coast to coast last fall was about $80. Make sure you don't short yourself. I always cringe when I see someone put a shipping fee of $35 on a bike; I can't ship one to Portland (180 miles) for that so I know someone's going to get upset--either the seller of buyer is going to get a nasty shock. Research your shipping before quoting!