Additional cost for reward upgrade - $1

The extra dollar link worked exactly as intended for my upgrade, no confusion about what I was paying for. It’s a small thing, but having the option to add the agreed amount separately made the whole checkout process feel straightforward.

Needed to pay the extra dollar to upgrade my reward and the checkout link worked exactly as described. Simple process, no confusion on the amount.

Checked out without any friction, the $1 upgrade charge went through in seconds. Exactly the extra cost we'd agreed on, no surprise fees tacked on after.