Ebay already offers that type of sale on Half.com. I love Half!~ No waiting, no worrying about getting outbid at the last second. And I can get all my favorite books really really cheaply!~
I used to teach folks how to sell on eBay via consultation right at their computer. Most of the time, it was a fun experience. But one time I had an incredibly bizarre incident that I have been meaning to write about. And reading this thread, I think I will write about that incident this week.
p.s. Helpful hint---If you are planning to start selling on eBay, you MUST register with PayPal. 75% of all my sales are paid for via PayPal.