Newegg offers the refurbished Corsair Hydro Series H100i Liquid CPU Cooler, model no. CW-9060009-WW, for $64.99. Apply coupon code "VISACHECKOUT" and pay via Visa Checkout to cut the price to $58.49. With free shipping, that's $5 below our April mention and the lowest total price we've seen. (It's also $67 under the best price we could find for a new unit.) This liquid cooler allows you to monitor coolant temperature and adjust cooling performance directly from your desktop. It features two 120mm fans and a mounting kit. Deal ends October 22.
A 1-year warranty applies, although it's unclear who backs it. Note that the coupon is limited to one use per account.