NeweggFlash offers the refurbished Microsoft Xbox One S Wireless Controller 2-Pack in White for $59.95 with free shipping. That's the lowest total price we could find for a refurb by $10. (It's also $35 under the price of buying two new controllers elsewhere.) It's compatible with Xbox One, Xbox One S, and Windows 10. Deal ends February 20.
A 90-day warranty applies, but it's unclear who backs it.