I look at 70 Mach 1 cars every day on national searches for my old high school car.
If you are thinking about buying this car, consider this:
NO A/C... I cant stand a car without a/c... My high school car in 1982 did not have a/c and I swore id never suffer on hot summer nights like I did when I was young ever again.
Cheap Chinese repro steering wheel instead of the rim blow wheel.
Cheap Shaker assembly (It has a fiberglass pan....fake)
Rear antennae is on the wrong side I think...
The rest of the car looks great.
Its most likely a dealer who will kill you for about 6 grand just to sell it to you.
I've seen (1970)428 cobra jet Mach 1 cars on craigslist for $34,000 recently in great shape.
For that car id give about $22,000 to no more than $24,000 for an H code car.
I forgot to check to see if it had the vin listed but for that car as an M code id go $3,000 higher.
A rotisserie restored car id go upwards of $32,000 to around $38,000.
Depending of how good the power train is and its condition.
These are my personal considerations from what I see in the market place and availability and prices I see daily.