Amazon.com has the Thermalright TL-M12Q X3 120mm PC Case Cooling Fans for $19.99. Free Shipping w/$35+ Order or Amazon Prime. Originally priced at $29.99, now available at a 33% discount. (Sold by IHTP, Fulfilled by Amazon)
Note: Prices on Amazon.com fluctuate regularly, and deals can expire anytime. Refer to the post time to see when it was listed.