I bought a lovely Marantz integrated amp for £15 once - that's the only hi-fi I've ever got from a boot sale. Bronze coloured with VU meters. Had an intermittant fault on one channel but I got it fixed for £20. Lent it to a mate as a stopgap when his Audiolab 800A packed in - that was in 1993, he still has it...

TBH I didn't think much booting went on any more what with eBay and so on. People go on about places like Cash Convertors selling stolen goods - well they don't have nothing on a boot sale.