TSM $299 and you supply your own calipers and lines.
SVO (explorer) but with the preload spacers, and calipers/pads,...$750.

If you know what to do and what to look for Wrecking yard, parts with new/reman calipers/pads...$200-300 max.

Weld on caliper brackets $40 a pair, rotors, calipers...put a kit together...$200-300 max.

Drums, wheel cyls, shoes and hardware...on the cheap end..
$200.

SD