Xigmatek XOF-F1254 120mm FCB PC Cooling Fans (4-Pack) for $9.99 shipped.  Here is a screenshot for your reference.  This is naturally for people who are technically inclined and like to build or customize their PCs.  It is two 2-pack so you get a total of 4 fans.  These fans feature fluid circulative bearing (FCB) and [...]