Look around at the local pawn/gun shops in your area. There might be one just hanging out waiting for you to come in to take it home.
I've seen them range in price from around $500-$750. I bought one for $550, all refinished, PAC Imbel Gear label Stg................I just saw another one in a different gunshop rusty, bore pitted, couldn't determine US parts count, wanted $770 for it. Wouldn't budge on the price either, said "it's rare"............
I just smiled & went home to the 4 I have in my safe without saying a word.
As far as wanting a "brake", most of them are threaded so just unscrew the muzzle device & screw on the brake of your choice. Or could get a kit, collect the necessary parts & have someone near you help screw it together. Get some extra satisfaction from that process & learn "how it works" better too.
Your choice, but remember to check out the weapon close. Rusty, pitted bore, no 922 compliance parts............run away scared. No matter the price. Nice finish (or worn, not rusty) good bore, some easily ID'd US parts for a decent price, you will have one you can be happy with.
Mark