Cobb AP is $600 everywhere. At least i havnt found a different price anywhere else. A pro tune would be about that price give or take depending on where you go and what you want out of your car. The AP gives you stage 1 and 2 maps that you can flash yourself and be done so its sort of a no brainer. Also, once you purchase it you will always have it to reflash if you want to, whereas a shop tune you won't. Another upside of the AP is it can also read CEL codes, display live data, mpgs etc. Having said that, you will always get a more efficient tune from a shop.