I have the opportunity to purchase a complete disk brake setup from a 69 camaro ... spindles, rotors, calipers, power booster and master cylinder. Everything appears to be in good shape. What should I look out for and what should I pay for it?

Check discs are not min thickness
Booster holds a vac
Bores on the MC and calipars are not corrided or damaged
Would suggest re kits for MZ calipars

Pay..have no idea of prices in the US

Used stuff, no more than 200-250...

If it is a 9204 booster, 309 master cylinder, 2 piece rotors, and the correct 633 calipers it may be worth a bit more than $250.

If it is a 9204 booster, 309 master cylinder, 2 piece rotors, and the correct 633 calipers it may be worth a bit more than $250.

"complete disk brake setup from a 69 camaro" - Sounds to me like it's just the front disc brakes setup, plus master, booster, etc. If that is indeed the case, my money is on single cylinder calipers. But you are right, a nice dated 309, 9204, etc. should be worth better then $250 I would think.

Now, if it's a JL8 setup ... That of course is a horse of an entirely different color!