Amazon with iHealthLabs has the 2-Pack iHealth COVID-19 Antigen Rapid 15-Minute Test for $20 – $20 health insurance rebate = $0 with free shipping on $25+ or with Prime. FDA authorized self-test for ages 2+. Get up to 8 rebates per month per person ($12 per test max).

If you purchase an over-the-counter COVID-19 test from a pharmacy, store, or online retailer and are charged for your test, keep your receipt and submit a claim to your insurance company for reimbursement. If your plan has not set up a network of preferred stores, pharmacies, and online retailers at which you can obtain a test with no out-of-pocket expense, you will be reimbursed the amount of the cost of the test. For example, if you buy a two-pack of tests for $34, the plan or insurer would reimburse $34. 

Source : CMS.gov