I just got one, basically new in box. It was bought in 1993, used once, then packed away. It's 4Mb, 0HD, and mint (condition, not OS).
I'd probably sell it for £300, but I'm trying to find an internal HD kit for it and 14Mb RAM - it's no use to me as it is, sadly, and I'm going mad trying to find downloadable utils to try my SCSI CD-ROM and HD on it - I'm going to try AHDI in the hope that works.