It is the same principle for bundles and for single tours.
Where do I find it?
Configuration > Transportation / Bundles > Online-Shop Configuration
What does it mean?
If you have different prices for onsite respectively online sales you can adjust if the lower prices should be shown on the booking button (this applies only for WebShop and Widgets sales). Further you can assign a picture which will be printed on every PDF ticket (also BoxOffice sales).
What should I do?
Insert a picture if you want and decide if you want the benefit should be displayed.
Example for the "Book" button with the featured price:
Online-Shop Desktop: Online-Shop Widget:
This is a PDF-Ticket with the ticket picture: