It's fairly hard to value these cameras as the market moves very very slowly.
I say find some film and start shooting. Ilford XP2 is black and white but uses color chemistry, can be developed anywhere, and has wide exposure latitude for your inevitable goofups. Speaking of, if your cameras don't have light meters, or you can't find the mercury batteries to run them, there are cell phone apps that do the same thing.
There are a bunch of mail-order labs in Kansas, of all places, that will develop your film and send you a link to your photo scans online. They'll chuck the negatives unless you pay extra.