Starting with a "shot"engine worth (maybe) £8,000 then add rebuild costs. I saw a "bare" engine sell in Australia less than 2 years ago for AUD$15,000 which, at the time was £7,000 but is now £9,000. IF the engine that has just sold can be fitted & run "as is" then I would say it is value. How much is a complete Godet engine today?
I would be interested to know why a brand new rebuilt engine has been sold.... could it be the GFC has bitten someone or is there an even more poignant reason?
If I had bought it & put it in my Comet (total cost £4,000 max) then sold the Comet parts, I would have a nice non-matching numbers twin for about £18,000.
Just idle speculation of course,.....,