The way I see it...there are two (or three) ways to go here.
One way, as Mark pointed out, is to get a good quality manual focus SLR. It will have to be used, but a lot of those old cameras were made really well and will still work well. A benefit is that they they are cheap and they are simple. They won't have all the bells & whistles that new cameras have. Example, Canon AE-1.
Another way would be to get a new Auto focus camera. You can get one with all sorts of modern features and stuff like that. A new camera will be sure to work properly or at least be covered by a warranty. Also, the lenses will be compatible with current Digital SLR cameras if you head down that road. Example, Canon EOS Rebel series.
Another option would be to buy a used autofocus camera. Maybe something a little older but not more than 10 or 15 years old. You could get a better class of body than if you bought new. Example, Canon EOS Elan series or EOS 3.