Even at that sort of money it’s still steep mate.At £2,500 - £3,000 I could see this sort of thing changing hands amongst collectors, but probably never being mounted. But hey they've got it and they can try their luck for as long as they like!
Not even an original M900 Seatpost, although I do prefer the M910.
Those Seatpost clamps do exchange for big money though.
The derailleurs and Seatpost don’t fit my bike and to add insult to injury the BB is 113 whereas standard XTR was 107