Even though Nintendo seems to be trying very hard to get more shipments to stores, according to BrickSeek some stores like Target, Best Buy, etc. are getting over 100 units per brick-in-mortar location when they got only around half or even a quarter of that shipment amount for the NES last year. Likely 50-75% will end up being bought from scalpers still trying to make some cash on it.
I preordered and been playing it since yesterday (Best Buy delivered early and seems to do that sometimes since I even got my Switch a week early...) so good luck to the ones still in the hunt.