You likely won't find it included for free with Prime (it rotates occasionally), but you can always or Buy it on Amazon. Renting in 4K UHD costs around $3.99—cheaper than the cost of anti-virus software to fix a malware infection from a spam link.
: Cyber security researchers have noted that many public movie links on Google Drive are actually masked malware. A single "wrong click" on these links can install harmful software on your PC or mobile.