Not sure if this is a good deal or not, but I understand Amazon credits are expiring March 1st.
Here is what happens after buying the 4k digital through Amazon:
Movies anywhere = 4k HDR
iTunes = 4k Dolby Vision
Amazon = 4k (no HDR)
Vudu = HDX
https://www.amazon.com/Crouching-…00OQVRXVS/