TigerDirect offers three Kingwin 120mm Case Fans, model no. CF-12LB, for $26.97. (Add three to your cart to see this price.) Redeem three of these $9 mail-in rebates to make them $0. With around $4 for shipping, that's the lowest total price we could find by $24, although we saw them for a $9 profit yesterday (since expired). Each 940 rpm fan features an air flow capacity of 40 CFM. Rebate ends October 29.