You might not be as far from the truth as you think...
You can do a lot worse than look for the unfashionable cameras using a given mount. I see loads of Pentax SF7s and P30s going for next to nothing, the SF7 was the second camera to use the current AF K mount design after the SFX and it'll work with any full frame lens they've ever made. Price? You can find them for under £10 on ebay UK regularly. From observation the Canon and Nikon AF bodies can also be found cheaply if you're just after a working camera rather than the top of the range awesomeness or a collectable mechanical marvel.
My money would be on a Pentax SFXn with the AA battery grip, just makes it that bit easier to feed. Find one with the 35-70mm zoom and it's a cracker.