Help me choosing best 120mm fan for airflow

[NBL khalifa]

please suggest me good 120mm fan under 15$ (or Rp 200.000) that have a good cfm (over 70-90cfm) , i will give you guys indonesian local online computer retailer link for the fan , help me choose the best one

1
2
3

the price of this 3 store can be different each other if you find a good fan with friendly price please suggest me on comment

 

[Unolocogringo]

Aerocool shark from Harga 60,000
Specs here at newegg.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835129055&cm_re=Aerocool_shark-_-35-129-055-_-Product