If it is NIB with all the factory goodies $1200 probably wouldn't be out of line as only 640 of them were made. They are great pistols and I love my MK2 version but personally I wouldn't buy a NIB one unless it was under a thousand as I shoot every gun I own so I'd look and see if I couldn't find a lightly used one unless you purely want to collect it and not fire it. Just my .02 cent and probably worth less.

Please post photos if you get it.