If its faulty, you should send it back. That being said, I can not look in your wallet so I dont know what you find cheap. But the Hyper 212 Plus should cost around 25$ and is reviewed as one of the best price/performance coolers. Or you go with the more expensive, but also more silent Mugen 2 Rev B. There are more options, but these both get great reviews. (I can say that I love my Mugen 2, its cool and silent :) ).
On a side note: This is not really the topic to ask these questions in.