i want to bag my car. I have been hearing rumors that it cost alot to maintain them. Do they really go bad alot? For and average to good set up about how much would it cost. Last thing, that takes the place of coilovers and shocks i would just need a camber kit with it, right?

Yes, the air bags replace the shocks and coilovers. It should cost between 2-3 grand to put bags on your car, depending on what qaulity of stuff you get, how much they charge to install, etc.