Back to the subject....any decent SP is going to cost in excess of £4250 these days...more depending on condition and model.

If you manage to find one that needs restoring (far and few between) then you may get lucky and get one cheaper, you could always just buy a red and white MC21 SE and stick some magteks and a couple of "Winners One" stickers on it, then you will have the exact same thing as a winner one anyway! A MC21 SE will cost considerably less.