I don't pay that much for this stuff either but that is what these places are asking for it. For example page 72 of the current Truck Shop catalogue, 5 lug disc brake kit with booster, $699. If you can get parts from a 74 Malibu doner car like I did, buy the brackets, booster & MC, you can reduce the price considerably. There are many ways to arrive at the desired result, a person just has to figure out what fits their needs.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine