This has to be one of the least expensive models around. At $21 this seems to be a good option. I do wonder what noise would be like with 110w+ processors though.
Amazon.com: Dynatron R24 Intel Socket 2011 2U+ CPU Cooler with Heatpipes: Intel® Sandy Bridge Romley-EP/EX Narrow ILM Processors up to TDP 160 Watts: Computers & Accessories
Amazon.com: Dynatron R24 Intel Socket 2011 2U+ CPU Cooler with Heatpipes: Intel® Sandy Bridge Romley-EP/EX Narrow ILM Processors up to TDP 160 Watts: Computers & Accessories