Someone on your team sent you this. They are using one of our add-ons that an administrator installed for your whole domain, and they cannot buy a licence themselves.
If an administrator installed our add-ons for your whole Google Workspace™ domain, a per-person licence is the wrong shape. One team licence covers everyone in the domain, for every tool we publish.
An individual licence is $29 a year or $69 once, per person — fine for one or two people, poor value past about five. Prices rise as the suite grows; a licence bought now keeps its rate at every renewal.
Why this is an invoice and not a checkout button. A team licence is issued to a domain, and we would rather have your billing details right than make you fix an invoice afterwards. Write to us and you get a real reply from a person, usually the same working day, with the invoice and — once it is settled — the key.
It is a key, not an account. We issue one key for your domain; your administrator passes it to whoever needs it, and each person pastes it once into the add-on panel. It is verified inside your own Google account by checking its signature — there is no call to any server of ours, and nothing about you, your documents or your spreadsheets is transmitted anywhere. That is why these add-ons can honestly claim that nothing leaves Google.
Everyone drops back to the free tier. Nobody is ever locked out of their own data: the everyday features, the preview and the undo keep working, exactly as they do for someone who never paid.