Well I'd love to have one of those, unfortunately Apple stopped production of it when I got the money for it.
It's a wounderfull piece of craftmanship and design. Adding some RAM and the "better" graphicscard it even still packs a punch.
From the price side I would be well tempted to exchange my mA1 for this baby since the cube sometimes sells for more then new. Only the uncertainity of geting another mA1 in the near future is stopping me from takeing on the offer (and of course the distance).