I wouldn't get a liquid cooler unless it has a 240mm radiator and those are about $100. The best cooler you can get for $50 is probably the phanteks PH-TC12DX.
indeed. that tc12dx you suggested seems to perform better than my hyper212 in the reviews ive read about it thus far, granted it hasnt been tested on a 2500k (granted, a 2600k and 3570k among others are close enough)
thanks for you suggestion i'll likely be purchasing it. however, im still open to any other suggestions from other sources