https://arstechnica.com/gaming/2023/08/microsoft-now-offers-xbox-controller-parts-manuals-and-video-repair-guides/

If you're the type of person who hates the idea of giving Microsoft another $65 for a new controller (or more than $100 for an Elite Series 2) because you know there's just one part broken, Microsoft has a store for you. It's small, but it's something.

Direct from Microsoft, you can now buy a half-dozen Xbox repair and replacement parts for both the Xbox Elite Wireless Controller Series 2 and the standard Xbox Wireless Controller. Each controller has top cases and button replacement sets in black and white, plus the two inner circuit boards that provide charging, input, vibration, and, of course, sockets with new potentiometers installed to fix stick drift.