Smart move if you have a system like this to shift it quick whilst people will still pay the big bucks. Let's face it, a SAMiga has a lot more grunt for the same cash.
This is still a very nice Amiga system however. Products are worth whatever people will pay for them.
For me, Sam rules, the only other system I'd buy would be a Natami, hell, if they go for the price the developers are aiming for, I'll buy 3!! ...but they ain't here yet!
Good luck on the sale, a lot of us will be watching. :-D