Originally posted by TenZ.NL
There is more to a car`s braking system, Peter. Disks and pad are cheap (for normal cars) but main brakecylinders, auxillery brakecylinders, ABS parts, etc are usually not that cheap and require a lot of work (manhours).
No to mention that properly maintaining brakes means resurfacing the rotors (or drums if so equipped) when you replace the pads/shoes. Putting new pads on a worn rotor leads to very poor braking until the pads "wear-in" to the surface of a worn rotor (same with drums/shoes). You are taking a huge risk to your life and others by doing this. Also, rotors and drums can be resurfaced only so many times before they need to be replaced.
Sorry, but you've done something incredibly wrong if you need to spend $800 on a one-time brake repair, unless you have an ABS unit or another expensive part fail at the same time as your brakes wear out.