And you're not getting the factory/dealer warranty that NEW 280-ZX would've came with, probably not valid..
None the less, it is the #1 black gold car, Gorgeous car, excellent condition.
I would be concerned with a car that has sat for sooo long, engine could be in worse shape than one with 200,000 miles of the same vintage. Rubber components such hoses, seals etc are not necessarily like new and with fuel and other fluid sitting stagnant in them for sooo long.
Oil tends separate when it sits, acid tend to settle. Seen more than a few oil pans that have had holes eaten in the from the inside out from oil that separated due to sitting for years. Also very hard on cranks, bearings, etc. Grease also doesn't like just sit, think ball joints, U-joints etc...
For car that would never ever start up or drive, just to look at and be pushed on an off the trailer for shows, pretty cool! For a car that might be driven, hmmm... $35,000 entry fee and $10k-$20k in replacing all those unusable new parts with usable new parts... Probably still a good deal for the right enthusiast.
Again, gorgeous car, nice to see such an example so well cared for, still in as new condition.