This seems like a very strange problem to me. I'm trying to get RDS User CALs for Windows Server 2019, but I can't seem to find any official place to purchase them. The Microsoft website only lists CALs for 2022. Other online stores, found by simple Google search, vary wildly in price point and appearance, and I can't figure out a good way to tell legitimate sellers from potential scams.
Windows Server is a staple OS, and 2019 is the second-most-recent version and is still fully supported. I can't be the only person who needs RDS user CALs. So where do people buy them?