*IF* I had the money, I'd buy that in the blink of an eye. Unfortunately, I don't.
As for price, well, I'd say that it's about right given the levels that PPC accelerators are going for...
Sure it's a lot of money for an old computer, but it is without doubt the best specified Amiga going and if I were putting together my dream specification Amiga, that'd be it.
Well, apart from I'd hack it into a 3000 desktop case

(yes, I know it won't fit, but I like my Amigas to look like Amigas)