Fry's offers the refurbished Corsair Hydro Series H100i V2 Liquid Cooler, model no. CW-9060025-WW, for $77.99 with free shipping. That's $25 under the lowest total price we could find for a new one. It features a 240mm radiator, two 120mm SP120L PWM fans, and a copper mounting plate.
No warranty information is provided.