Why can't I find All Inclusives in Panama on Priceline?

We’re making our plans for Thanksgiving week. Probably a beach vacation.
Jamaica, Cancun, Cabo, Costa Rica, etc., all being considered.

Right now one that tops the list is Panama. Other than going through the canal on a cruise we’ve not spent significant time there.

What’s strange is I cannot find a single all inclusive flight/resort package on Priceline. All the other travel sites (which I realize are all mostly the same as they are almost all owned by Expedia) have packages for all inclusives to Panama. But Priceline doesn’t have any.

Any idea why not?