Is there a version of Adobe Acrobat that is Windows 10 compatible and can be purchased for a one off charge rather than subscription?
That option is not available on that page.
Unfortunately, it seems like Adobe is hiding the option to buy a perpetual license more and more as time goes by.
It can still be done by following these instructions I've compiled:
Go to the Adobe Products Page: https://www.adobe.com/products/catalog/software.html
Click on the Buy button next to Acrobat Pro DC, and then change the "I want to buy" option to "Full" (or "Upgrade" if you have a qualifying earlier version). Then select the other options and click on Add To Cart, and proceed to checkout. You'll get a full license, not a time-based subscription.