If you're looking for a straight forward OEM computer, Dell would be who I look to for the cheap factor. Their support is pretty crappy but eventually get the job done.
well it really depends on what kind of computer or laptop your are trying to get. If you are trying to get a computer with Intel Core i7, then it will probably cost you around 2000 or 1000 bucks at any computer store. But if you want to get a basic, then it would be only 200 - 500 bucks at any computer store with no monitor. I hope I helped!