A really horrible dirty incomplete towered A1200 for £4 which turned out to have an Apollo 1260 and a scandoubler inside it, they got listed on findit.co.uk and I made £130 and £70 respectively for them.
Another A1200 for £10 which had a SCSI/RAM board inside it which I got £40 for on eBay.
My A600HD with apollo 630, a whopping £10
External caddy load CD-ROM with surf squirrel, Vidi amiga 24 and Scala MM200 for £15
I could go on, its the prize you get for doing 2 carboot sales a week for 10 years lol