The market is saying "no" to market adjustments.
Whenever an automaker releases a hot new sports car, dealerships like to place what they call a "market adjustment" on the car, in order to squeeze more money out of buyers when a car is fresh on lots and difficult to obtain. Dealerships have already done this with the Toyota Supra, with some stores attempting to get $100,000 for the $50,000 sports car.
Market adjustments are predicated on there being more demand than supply (thus resulting in a higher price) but the market has spoken, and the market is sick of paying these silly prices for new sports cars. The Corvette Forum has even created a list of dealerships who are willing to sell the new 2020 C8 Corvette Stingray at MSRP, so there is no reason for anyone to pay over sticker price anymore.
This is absolutely brilliant work on behalf of the forum to help avoid paying a dealer markup for the new Corvette. Paying a dealer markup is never a good idea as buyers immediately lose the value the minute the car is driven off the lot. The forum has a constantly-updated list of every dealership that can sell the new C8, with a note of whether it will offer it at MSRP.
So if your local dealership says it won't sell you a car at sticker, just pull up the list and show that you know someone else who was able to get that price. If showing them the list still doesn't work, you can change the dealership's status, which will tell other buyers not to go there. This is a great strategy that should, hopefully, shame any dealership that isn't willing to give a fair price on their cars and virtually eliminate this practice from existence.
The 2020 Corvette is a tremendous value with a starting price under $60,000 but that value would quickly be eliminated if a greedy dealership wanted to charge $100,000 for the car. Demand is high for the new Corvette - with some reports claiming the 2020 model has already been sold out - but don't worry because there are still plenty of allocations to go around, hopefully at MSRP.