The entire crypto-to-AI-subscription category rests on one product feature: the gift plan. It is worth understanding properly, because it determines what a reseller can and cannot do for you.
The mechanism
A gift subscription is bought by one person and redeemed by another. The buyer pays at checkout and receives a redemption link. The link is a bearer instrument: whoever opens it and applies it to an account gets the subscription. No relationship between buyer and recipient is required or recorded.
That property is what makes resale possible at all. It is not a loophole, it is the intended behaviour of a gifting feature.
What redemption does
Applying a gift link either creates a new account at the vendor or extends an existing one. Where it extends, the time is normally added to the end of the current period rather than replacing it. Where it creates, you go through the vendor's ordinary signup and their terms apply from that point.
The account is yours. The reseller has no access to it, cannot see your usage and cannot revoke anything after the link is redeemed.
Timing, and why it is not instant
The purchase step is a human at a card checkout, not an API. There is no automated route for a third party to buy a gift plan programmatically, so anyone promising instant delivery is either holding pre-bought inventory or overstating. Pre-bought inventory carries its own risk: a code sitting unused for weeks may be tied to a purchase that has since been reversed.
Buying on demand takes longer and is cleaner. A few hours is normal.
Where it can go wrong
A redemption link works once. If it is intercepted in email before you use it, it is gone, which is an argument for redeeming promptly rather than filing it away. Links do not generally expire, but the underlying purchase can be reversed if it was made fraudulently, which is why the provenance of the purchase matters and why a reseller buying on demand with its own funds is a safer counterparty than one reselling codes acquired elsewhere.
What it is not
It is not a shared account, not a group plan seat, and not a licence key. If an operator describes what it is selling in those terms, it is selling something else.