Walmart now has new listings for Amazfit smartwatches; however, they are not for the latest GTR/GTS 3 series, but for the popular health and fitness tech brand's latest "performance" wearables, the Bip U Pro included. They start at US$40 through the physical and online retailer from now.
https://www.notebookcheck.net/Amazfit-releases-its-latest-smartwatches-for-sale-via-Walmart.574935.0.html