Yes, but they do call from time to time for upgrade fees when a book grades out worth a lot more money than the tier you submitted it under. That's a fact.
So do they go ahead and ship it back to you before calling to get more money?
They would correct the invoice tier when they first receive it.
CGC would call telling you the AF 15 goes into a standard tier.
You're not following me. Forget AF 15.
You send a Spidey 129 expecting a 6.0 and you get 9.4 for example.
CGC used to call, after they graded the book, and say "hey, we're going to have to upgrade the charge on this book because it too far exceeds the tier you submitted it under."
And you give them a CC# and life is good.