Deepcool Gammaxx 300 CPU Cooler w/ 120mm Fan (AM4 Compatible) for $7.50 AC AR + Free Shipping

via Newegg after applying promo code ACCSPCPAXO and a $5 Rebate
Deepcool Gammaxx 300 CPU Cooler w/ 120mm Fan $7.50
Limit 1 rebate per household, rebate can be found here