newegg.com offers the Zalman 92mm Hydraulic CPU Cooler, model no. CNPS5X-SZ, for $19.99. This $10 mail-in rebate cuts it to $9.99. With free shipping, that's the lowest total price we could find by $15. It features a 92mm fan, hydraulic bearing, three heatpipes, aluminum fins, and more. Rebate ends January 23.