I haven't yet gotten any "beyond belief" deals, but I think the $80 I paid for the Duco '59 WFL Barrett Deems that's now in the Gallery and Restoration subs was money well spent, as was the $100 I paid for my '62 red sparkle Student Model Radio King.
For $300 I can overlook the pitting on the hardware of my blue agate New Rock 50N outfit with "this plain steel snare" that when I got it home turned out to be a COB Gene Krupa Sound King. (there was also a very nice set of sheets and pillowcases in the bass drum)
Craig's List transactions all.
After reading this thread, I will continue to keep my eyes open at Goodwill, Salvation Army, yard sales, etc.