That's the point though - the 4080s just aren't selling like Nvidia had hoped.
Just because Micro Center is limited to the number of states they're in, there are still 25 total stores. It doesn't matter that Micro Center does in-store only for sales because it was shown that with the GPU scarcity with Ampere, cards flew off the shelves at Micro Center. People were lining up outside on the delivery days (Tuesdays and Thursdays, if I remember correctly) every day for a chance to get any GPU for many months. I tried my luck a couple of times and I never got one, but the store workers told me every delivery day it's like this; 60+ people show up in the morning, get on the list to get randomly picked for the maybe 2 dozen cards they get in. This went on for months. Cards sold before they were ever put on the shelves for stock.
With all that in mind, people gobbled up the GPUs that Micro Center got in, especially for Nvidia cards. If the 4080s were as hot as they appear to be simply due to the fact that you can't find them at online retailers, the 4080s at Micro Center stores would have all sold by now and you'd be able to find zero anywhere in the US.
The 4080s just aren't moving. Just because you can't find one online or for MSRP online, doesn't mean the cards are highly sought after. It just means that scalpers gobbled them up (along with some actual consumers that do in fact want one) and the online listings you see now are way over priced. If the 4080s were popular and hot, hard to get. Then why are the Micro Center stores still sitting on hundreds of them across all their store locations?