The thinking
Three decisions behind the page.
Define a tangible product
Format, contents and the intended reader are stated before any price. Visitors can decide whether it solves their problem.
Explain the threshold plainly
How many reservations, over how many days, and exactly what happens if the number is not met. The refund rule sits next to the buy button, not in a footnote.
Make the choice legible
Two editions, two prices, one line of difference. The purchase step shows the terms again before anything would be charged.