There are 15+ in stock at the Walmart near me, YMMV, In store only. You can check stock with the following links. I was able to order on Walmart grocery and picked it up. I am only posting this so more people can have a chance to buy a switch with MSRP.
Nintendo Switch Console with Neon Blue & Red Joy-Con
Nintendo Switch Console with Gray Joy-Con:
Update: Simply use Walmart grocery pickup to place an order if you can, you don't even need to go there to check. They will notify you if it's ready for pickup, or OOS.