I saw a 12" Pioneer SW-100 subwoofer at Goodwill for $20. The foam around the speaker cone was rotten/torn. I looked up how much for a replacement speaker $$$, so I wasn't going to get it. But I found that you can get replacement foam for ~$25, So I went and bought the subwoofer. Put the foam in and it works fine.
I am banned from using it while the wife is home.
She was out the other day so I hooked it up and cranked up some uplifting trance. I thought she was joking when she said she could hear it outside.
Anyway, that's my best Goodwill score. Anyone else have something they got a deal on, Goodwill/yard sale/craigslist?
Doug