Newegg offers the Cooler Master Hyper T4 CPU Cooler, model no. RR-T4-18PK-R1, for $24.99. This $15 mail-in rebate cuts it to $9.99. With free shipping, that's the lowest total price we could find by $13. It features a 120mm fan, four direct contact heat pipes, snap-on fan brackets, and support for many Intel and AMD processors. Rebate expires August 1.