These fans are between $8.99 and $19.99 with a rebate equal to the price and free shipping until 11/30. I have no idea how reliable Xigmatek's rebates are but I figured I'd post this in case anyone wants to give them a try. It might be limited to one per household.
80mm Green LED
80mm Purple LED
170mm White LED
170mm Green LED
170mm Red LED
170mm White LED Black Housing
170mm White LED Orange/Black
170mm Blue LED
200mm Blue LED
200mm White LED Orange/Black
200mm White LED Black Housing
200mm Purple LED
80mm Green LED
80mm Purple LED
170mm White LED
170mm Green LED
170mm Red LED
170mm White LED Black Housing
170mm White LED Orange/Black
170mm Blue LED
200mm Blue LED
200mm White LED Orange/Black
200mm White LED Black Housing
200mm Purple LED