Dunster and clsurz make a lot of sense. I've sold on ebay for several years and buy also.
Auctions can be a real pain but I get the 50 free listings a month. I'm not sure how I qualified. They call me a Power Seller, which I am not, but I have that status of being reliable etc- forgot what you call it :) The feedback scores, that's it.
I LOVE being able to do auctions with a Buy It Now option FREE!
That's the only reason I still sell ( to feed my sewing addiction of course)
I've never sold with reserves or bought with them either so I don't have any advice.
I usually buy using buy-it-now- so much easier.