Brake Boosters getting scarce?

Hydroboost is very effective, and they used it on a lot of GM trucks, but it can also fail. I have a buddy with an 84 6.2 4x4, and his failed last week.
I guess everything can and will fail at some point, but ya know.

This car has front disks with power, while my 65 has 4 wheel drum non-power. I don't mind non-power brakes, but as most of us know, a power-brake system, where the booster has failed, is 10-times harder to use than just a non-power brake system.

I looked at Dewey's site, and while it seems like a good way to go, it also means the car is down for several days, as I'd have to remove the unit, ship it from Atlanta to Portland, then back again, and install. This is my only driver right now.
As for POL, looks nice, but it's also $279. Even though it includes a new master cylinder, a reman master cylinder costs less than $20.
Am I trying to be cheap? Yes & no. I've been out of work since mid-October, so right now I'm looking to spend smart. I'll do things correctly, but I simply can't afford to shoot for the moon on replacement parts, and like I said, this is my only car right now.

I did get a lead on a place in Atlanta called Brake Specialty, so I'll call them on Monday and see what they can do. My brother said when he worked in maintenance for Coke, they used to do all of their boosters, and they did a good job.

Thanks for all the suggestions though.