You could get a cheap paint job like MAACO which would be around $300 but it won't last long.. they use a quick primer then paint and use a thick clear coat over that that takes about two days to dry.. it looks nice from far away but otherwise

it'll last for maybe 1 or 2 years if you're nice to it but I wouldn't count on it lasting much longer than that before it starts spidering and wearing down..
A *real* paint job from a body shop is done like the car companies do.. they use the primer, four coats of paint and four coats of clear coat if I remember right.. this kinda paint job can last for decades or at least 12 years.. it is done just how the car companies do it if not better, but they cost in upwards of $1200...
Its your call really.. pay $1200+ now and have a paint job that'll last the conceivable life of your car or get MAACO or something similar that will last for maybe 3 years if you're lucky..
Edit: Just realized that the $1200 was for my friend's VW Bug.. your unlikely to pay that little for any regular sized car.. I'd say +-$1700