I have heard people mention a couple of mail order businesses which have used cameras for sale. I'm not confident gambling on eBay, so would like to acquire a camera from a more reputable photography business.
I live in the North Midwest, and know about National Camera, and West Photo. The F-stop swap is coming up too, but I am not knowledgeable enough to know whether I'm buying a dud or not.

Any recommendations appreciated.

- Thom