I think you've already gotten your answer, but I dig selling (and buying) on eBay so I had to chime in.
I have always only used reserve prices when selling things that I needed to get a certain amount for. I usually state in the auction what the reserve is though, only because I want people to know so they can see the light at the end of the tunnel. Reserves are best used when you don't know the interest you will get, but don't want to give it away. A lot of sellers get around this by setting the opening bid at the amount they will settle for, but this always, at least for me, makes me look elsewhere. The thrill in eBay buying is the idea that you will get a great deal and, the lower the starting bid, the more real that thrill is.
Before I got my Cub, I looked at tractors on eBay. Mostly local though so I could go see them in person before bidding. Never actually bid though. Looked at a few cars and ATV's too, but again, no bids. So far, the biggest thing I bought was a mountain bike and, I might add, I love it!
My $0.02.
- Gerald