newegg offers the Cooler Master SickleFlow 120mm Silent Operation LED Case Fan
in Green, model no. R4-L2R-20AG-R2, for $7.99. This $5 mail-in rebate
cuts it to $2.99
. With free shipping
, that's the lowest total price we could find by $6, although we saw it for a buck less in June. It features a maximum speed of 2,000 rpm, long-life sleeve bearing, and more. Deal ends September 18.