Best Buy meets Costco - a place you can look at things you'll buy later online.
It's also great for items likely to be scalped. It doesn't guarantee they'll have stock, but it sure is easier to beat scalpers to checking the store that day than bots to an online cart. I even got a Switch 2 bundle the day after launch at MSRP while there for something else. Edit: shit, prices are worse all around now. Glad I didn't wait :D.
Where else would you be buying equivalents online anyway?