Is there an affordable guitar that is good for a beginner?

I’d really like to learn to play guitar. Right now I don’t have one. I’ve tried to learn in the past, but the guitars I had were really horrible and made it that much more difficult. The strings were always hard to press on the one, and the other kept slipping out of tune. I don’t have much money, so I’m looking low-end. I could keep an eye out on craigslist, I suppose. Is there something you can recommend that I should look for?