Back in 1989/90, the market for many prestige and classic cars went stupid, and crazy prices were being asked and achieved for relatively modest Porsches, Ferraris, Astons, etc.
Then, in mid-1990 the market started to fold and prices collapsed. This car was probably such an example - that may have been acquired by a short-sighted speculator for around £100k.
So, what do you do when it's suddenly worth £30k? Sit on it and wait for the market to recover, of course.
Trouble is, it took 15 years and second time around the market was better informed, and more mainstream production models, such as the 930Ts, never found favour as they did back at the end of the '80s.
It has a value of course, but £60k would be more realistic and then it could be used and enjoyed for say 3,000 mls pa and take in the odd display and concours.
£100k is ridiculous, especially as rhd severely limits its appeal beyond the uk.