The legendary spy camera

A lady at the BCLM asked me about selling her Minox - the legendary spy camera. I have never used one of these, but having used a Minolta 16-II, I really doubt that they could have captured any useful information! The image quality from the 16-II, which shot around the same sized image, was DREADFUL, I soon replaced it with one of the original Olympus Pen film cameras, which was at least one order of magnitude better in the final image (fabulous, if modest, lens), and also mercifully lacked the feature of the 16-II that if you wanted to use the viewfinder, it advanced the film even if you did not take a photo.

EBay suggests that the Minox is worth around £150 - comments and suggestions welcome.