"I've never ordered from eBay before but there is a first time for everything, no?"
Greg, are you kidding? If not, it's a place where I find stuff that's no longer in production (usually for whatever price the market will bear) and I use it sparingly. Make sure to read all the information you can on the site .. product specs, etc. Read carefully, and if you're not sure of something you can usually email the seller with your questions.
I usually go for the "buy it now" offers since I'm too impatient these days to go through the bidding process. I've done it many times .. just doesn't do it for me anymore.
In a nutshell: Caveat Emptor!