Now a GN is no Daytona but it's also 1/100th of the price. The problem is you guys are using logic and your probably not the market audience for the car. That Ferrari set into motion a trend for barn finds that sat for years to sell for big bucks and the dirt/dust has command higher selling prices at auction. Mostly this applies to cars much more rare than a GN, but maybe the seller is hoping he can find one of these "Barn Find Hunters" to pay up for his dusty GN. Also the 26 mile GNX that sold for $200K do you think that car didn't sit up for the better part of 30 years?
This'll be a good test of the actual market right now:
Bid for the chance to own a 6k-Mile 1987
Buick Grand National at auction with Bring a Trailer, the home of the best vintage and classic cars online. Lot #29,943.
bringatrailer.com
Same car just only 6,000 miles. Again it's probably sat stored a long time as well over the last 33 years to only accumulate 6,000 miles. This one is being sold by a dealer and they did some paint work, replaced the tires (assume the ones on it were dry rot and square from sitting) and put on new shocks probably cause the originals had rotted leaky seals. This one has a day left in the auction is already almost $10K more than the Canadian car.
The seller could be one of those guys that can't even change his own oil, so it might not be cheap for him to fix/clean up the car. Lots of guys make a living on buying rare cars from people that need to be fixed up or cleaned up to be sold. The seller makes no mention of the mechanical condition of the car, but assume it starts and runs.
I'm still not sure if it's our best interest as owners for these cars for their values to go up or not. On one hand if you own one or several you're able to possibly make some money, but on the other it could inhibit buying another if the prices go too high. Personally I'd like to see the values of these cars (all Gbodies not just the GNs) climb and loose the stigma of being more at home in a trailer park, and become more respected at the car shows.