So how could i implement this promo item into the collection page? 

I would like to automatically set a fixed expiry date on gift cards. Means 3 yeas of expiry, but always to Dec 31st. I buy today a gift card, the expiry date would be 31.12.2025.If i buy on the 06.01.2023 the expiry date would be 31.12.2026. How coul...