Customisable Text on Payments 2.0 CTA Buttons

At the moment all we have for Calls to Action is a "Choose Your Tier" Button, even for once off purchases on courses. This could lead to confusion and abandoned carts. Customers want to select the offer they are purchasing, and it may not be a tier. It may be a digital product. We may call it a level, or membership, or even want to name the specific tier on the button.