One fall day a few years ago, I dropped by at the Surplus Exchange, one of Kansas City's best-kept-secrets for scroungers [I've seen Mac G3's there -used, to be sure - for $50], and found a Proton 300/301 combo for ten bucks. A little DeOxit in the scritchy volume pot, and they were good to go. They replaced B&W Matrix 805's in my "main system". They usually go on eBay for $10 - $200. Realizing that I had yet to scour one area, I stowed the Protons and went back in. On that foray, I picked up a B&O all-in-one. It was another ten bucks, and I sold it's MMC20EN phono cartridge on eBay for over $70.
At the DAV, I picked up a JVC MX-1, the first of a long line of compact stereos, for $35, a little rough, but everything worked, and the MSRP about 1980 was about $1000.
Billinkansas kindly gave me an excellent Toshiba tuner, and I have been finding out all over again that there are good things on the airwaves. Thanks again, Bill!
At a church rummage sale was a Thorens TD-145, marked "$15 - no platter". Took it home and unpacked it - it was ALL there.
I could go on, but those are the highlights. If I include the bad deals, I probably break even...
Laz