Hi, Daniel. Are you wanting a button within each event’s “box” displayed in the Photo View?
If yes, I appreciate your question and the desire to customize it for your use. However, we cannot provide such in-depth customization help, per our Scope of Support / Terms.
I can point you to the List View, which already displays the event’s cost (free or a price). Referencing the code that produces that output could be a good start to your baseline logic of whether to display the button or not.
If there’s a code snippet you’d like me to put some eyes on or something else I can help you with, please update this ticket or create a new ticket if it’s a separate issue.
Thank you very much for your understanding.
If you need some coding help, you may want to ask your developer or reference our documentation and list of known customizers.