Walmart has InteliSwab™ COVID-19 Rapid Antigen Test, For results anytime and anywhere (2 Tests) available for $14.
I was able to order 3 of these with free shipping. Otherwise you can get free shipping with a $35 purchase or a Walmart+ subscription (available for a 15-day free trial.)
Note that the White House announced today that Amazon, Kroger, and Walmart will sell rapid tests at cost for 3 months. So the price may go down further.
https://www.walmart.com/ip/Inteli…/916411293