Anyways - I get all this. I really do - but I still find it hard to believe custom/boutique instruments don't do well on the second hand market.
I mean, these aren't "off the wall, sheik wishes a gold plated option, touched by the hand of a virgin" guitars. And they aren't all shaped like a mollusc shell which has bred with a slab of mahogany. They are clearly a labour of love, a signature of the artist that created them (yes - albeit for a price, but I don't see Alan Cringean driving up and down Moffat Hight Street in a Lamborghini), and their finish is impeccable.