Hayes HFX nine HD 8" @ Cell Bikes $269
Thats a cheap buy for a disk brake set.
Nearest other I can find retails at $370 for the six inch rotors. This set is the 8". Makes me waver over whether to trash the Kona I've flogged to death and buy a new one or just periodically pick up bargains like this to put on the frame - which is still bombproof.
Comes as an out of the box kit with front and rear levers, cyliders, pads, lines and rotors. Probably also has the mounting bolts :)