Mike,
Does this machine have the TT conversion, or am I to assume if it is In fact one of the early production Belted Tail? If it's the TT tail version, I would say your in the neighborhood, if it is a Belt drive, I would most likely offer less. Just my opinion though. I would have to see the machine to make a better call. It honestly all depends how bad the seller wants to part with it, a lot of us me included, have made absolutely stupid cheap deals on Helis , some BNF and others needing electronics, etc, etc. you never know.. Keep in mind, we have a new machine that will be released before you know it, and that's were I would put my money.. You will see the market get inundated with E7's and it will be hard to move them and get a fair price. (My advice, if you can hold out for the 766, it will be well worth it. And if not you will still enjoy the E7..
As far as when will the 766 be available and Price point? That is still very much in the works and Matt will be the one to share that Intel soon.
K