I don't see any value in Stern pro games nib at all, at $7100 they are over-priced and lose at least 1k as soon as it's out of the box.
At around 5k 2nd hand they are a fair buy but not nib.

That's a better percentage loss than any car or jetski or motorbike.

For the BNIB price, u know you are getting brand new which is a lot better than buying a sited machine that already has a year or three worth of commercial wear on it.
Opening a brand new pin is worth the extra money to most.
Buying a low usage home use only machine is worthwhile but only if it's local and the new decals don't get scratched in the transit home.