A more expensive domain extension appears as its own line in your monthly amount

If you choose an extension that costs more than your plan covers for the domain in your plan, such as .app or .shop, the form now shows the surcharge before you choose, both when you keep your trial site and in your portal. Your first payment is the plan plus that surcharge, and from then on the surcharge is its own line in your monthly amount and on your invoice, just like an add-on. If the name turns out to be taken, or the domain does not go ahead, the surcharge stops. Nothing changes for a domain you already have.