How do you know if an item is actually eligible? I looked under the promotions for the item but it doesn't list the FFXIV one?

https://www.amazon.com/NAtURAL-DOCtRINE-PlayStation-4/dp/B00K5UZMJO/ref=sr_1_1?s=videogames&ie=UTF8&qid=1493590076&sr=1-1&keywords=natural+doctrine <--item in question.