It might LOOK as good as new
This machine must be what? 40 - 45 years old and in that time (as had been demonstrated so many times by our North American friends) rubber hoses and seals will likely have perished and split, not to mention the effects on the motor sitting unused for all that time. It would be a lovely machine to have but not at this (or a higher) price.
The ironic thing is that only a couple of weeks ago there was a Supertwin 100 (with the all stainless steel wash deck) on ebay at a very low price (was it 99p?) which I believe did not sell at all and yet it is fundamentally the same machine as this albeit several years younger.
Al