Those darned "supply disruptions" are also impacting controller availability.
Xbox controller

We already knew about the supply shortages of things like CPUs, GPUs, and consoles over the past couple of years, but here's one thing you probably didn't think about being impacted: Controllers. Due to "supply disruptions" Xbox controllers are also in short supply with many major retailers being completely sold out for all of June.

Microsoft admits the issue to VGC, who says that throughout many parts of the world, especially Europe, there are currently no controllers in retailers such as GAME, Smyths, Argos, Currys, or even on the official Microsoft Store. VGC says that Amazon UK is one of the few retailers that actually have a model in stock, the Carbon Black one, but even that one was sold out just yesterday. Third-party retail prices for that same controller are hitting £93.99, which is about double the official price for one.

Some users on the forum site Resetera say that they have also found it difficult to locate controllers in countries such as Australia, France, Germany, and the Netherlands. The only place that doesn't seem to have any supply issue is with custom controller designs made through the Xbox Design Lab. Their site still says that they "aim to have the controller in your hands within 28 days of placing your order."

While that is not a solid confirmation that you will have the controller in 28 days, it seems like the most approachable way to get one right now. Just keep in mind that these are custom controllers and will cost extra than if you purchased a mass-produced item.

A Microsoft spokesperson confirmed the shortage with the following statement.

"We know it may be hard finding Xbox Wireless Controllers right now due to supply disruptions. We’re working as fast as possible with our manufacturing and retail partners to improve this. Please check with your local retailer for availability."
For now, it seems like controller stock in North America is fairing quite a bit better than our European counterparts. Controllers are reportedly in stock at places such as the Microsoft Store and Best Buy. However, Amazon and GameStop are currently only selling pre-owned controllers. It's a bit better than Europe, but not by much.