Google AI Pro: 18-Month Upgrade Link vs 12-Month Coupon
Do not buy both expecting them to stack on one Google account unless Google says they do. Pick the SKU that matches how you will redeem: unique link, or coupon code.
The consumer plan is Google AI Pro, not Gemini Advanced. Both PerkShelf SKUs describe the current Pro bundle: Gemini 3.1 Pro, Gemini 3.8 Flash, 5 TB Google One storage, Gemini in Gmail, Docs, and Vids, YouTube Premium Lite. Deep Think stays on Ultra. This SKU is Pro.
18-month upgrade link
Delivery is a unique Google promotion link. Sign into the Google account you want upgraded, open the link, accept. No card on PerkShelf checkout. Official retail comparison on the listing is $299.99. Walkthrough: Google AI Pro 18 months.
12-month coupon
Delivery is a coupon, not that unique link. Same current Pro features as Google sells them, including 4× usage vs a free Gemini account on the 12-month copy. Retail comparison is $199.99. Redeem in Google's coupon flow on the account you want on AI Pro.
Which to buy
If you want the 18-month promotion and you can open a unique link while signed into the right account, that is the $9.99 SKU. If you were told to use a coupon, or the 18-month link SKU is out of stock, that is the $54.99 SKU. They are separate inventory rows.
Open the link or coupon only on the Google account that should receive 5 TB and Gemini in Gmail. Switching accounts after you click is how people activate the wrong inbox.
Product pages: 18-month upgrade, 12-month coupon.
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