Hey Emilio,
Thanks for reaching out to us!
Currently the price that displays there is pulling from the last ticket created. This issue will be addressed in an upcoming release to show the price range. However, if you would like the highest price ticket to display there, be sure to create it last. If the tickets are already created, you can try modifying the “Published on” date within the ticket settings https://cloudup.com/c845XePFEDN.
Let me know if this helps.
Thanks!