These are some of the controllers I've ended up with over the recent years, the Xbox branded one was bundled with my Xbox one Gen one, the others are off brand by PowerA. The Xbox branded one has kind of a fiddly usb port but it works, the gradient and white controllers right analogue stick might drift a little bit enough to be noticeable. The other ones I couldn't find any problems with but they might present after a lot of use. perfect for someone wanting to learn how to work on controllers. I will also include an old Razer Wildcat in case that needs repairing.
eBay