As one of its daily deals, Cowboom offers the used Microsoft Xbox One Wireless Controller, model no. S2V-00001, for $19.99 plus $5 for shipping. That's $19 under our March mention of a used item and it's the best price we've seen for this controller. (It's also $24 under the best price we could find for a new unit elsewhere.) It features vibration feedback, an expansion port to connect other devices, and 30-foot wireless range. Deal ends today.
Note: No warranty information is provided. Also, although these are rated as "9 - Like New," they may still show signs of use and might not include batteries or an owner's manual.
WD-40 is handy in a lot more situations than you likely realize.