Retail sales from Microsoft were stopped in 2023, might check some of the businesses such as NewEgg, Amazon, CDW, etc., for availability. Using the Media Creation Tool to download Win10 will include both Home and Pro, the key used for activation determines the edition. The OEM motherboard for Win8, 8.1, 10 and 11 have the necessary activation code for the OEM version. My experience for changing from Home to Pro is only a new key is required.
Microsoft says that it will stop offering Windows 10 Home and Windows 10 Pro for sales via its website after January 31, 2023
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