Emed, you see it when you click the order now link

"The test kits you are about to purchase from eMed have been approved for use by the FDA at least through December 1, 2021, after which they will expire. It’s possible the test kits you order from eMed may have an expiration date later in December 2021, but we cannot guarantee that. eMed looks forward to offering COVID-19 test kits with longer expiration dates in the near future. If you are interested in purchasing a lesser amount of tests, please visit the Optum store."