The Superchips 1715 can be found fairly cheap. I picked one up a while ago and still haven't messed with it. Mainly due to the price of 93 octane and the fact that I have a catalytic converter code right now and I'm not sure if it will play nicely with the programmer. But they can be found for 100 - 200 dollars. Not the best unit with the most options, but cheap enough.