I think this is part of Amazon US cyber monday deal available combined with $15 credit for amazon US prime customers who sign in using the mobile app
what i did was
- sign up for a new amazon US prime account 30 day trial, i got an email advising if i signed in using the app i would get $15 credit
- installed app, changed the app to international and signed in using new account. went back to pc and went to www.amazon.com/prime it verified i had installed the app and signed in and gave me $15 credit, but you must go back to the app and do order from there to use the $15 credit
- completed order using the mobile app and it applied the $15 credit to the purchase.
things to note: this is most likely the US gold edition which means the DLC codes will be only available to redeem on a US PSN profile.
It's from Amazon US. Price is in USD