So this is interesting.
Currently there is a Marantz SA-10 in black (that would match my other black components) on here listed at $3500. Says that it is a store display demo unit.
(Over on Music Direct they now have the SA-10 New discounted to $5200, which is out of my budget).
And over on eBay there is a Esoteric K-07XS (in silver) listed for $3300.
So between a Marantz SA-10 demo unit and used Esoteric K-07XS, both at the same price, I'm not sure which would be the better sounding unit in my system (B&W 804 speakers, MIT Cables) since I can't find any dealers in my area that still have the SA-10 or Esoteric XS series units on display.