Best Buy has the Antec Kuhler 620 water cooling CPU cooler for sale, $50. I purchased the H60 two weeks ago so I won't be diving into this but you may find it reasonable.
Link:
http://www.bestbuy.com/site/Antec+-...1218406315873&skuId=3474129&slref=10&slloc=01
Link:
http://www.bestbuy.com/site/Antec+-...1218406315873&skuId=3474129&slref=10&slloc=01