Off hand, I'd say that $1500. in today's money is a fair price for buyer and seller. With inflation, that 900.+ per head would be about 2k EACH in today's dollars!!
Heck, I don't need them (today) but I'd give 1500 to have them on the shelve... The coolness factor adds value. Besides nos is nos...
In this condition, almost unobtanium.