I’m sure I’m late to the party on this but I’ve not seen any prime movies that weren’t made by Amazon directly in UHD available with prime subscription. Not sure what titles are there beyond these three but these all I’ve found so far.
https://www.amazon.com/Logan-Luck…B074SWRQ
https://www.amazon.com/Transforme…B0
https://www.amazon.com/Spaceballs…de
Bracing for the downvote!
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