Pricing inconsistency

I recently purchased the McDXCoke Festive cups with 5000 points on December 15th, only to find out that the same cups were priced at 2500 points on December 23rd. This drastic point difference feels like a clear case of inconsistency and, frankly, feels like a form of *******. Such changes in pricing within a short span are not only frustrating but also unfair to loyal customers. I hope McDonald's addresses these discrepancies in their rewards program for a more transparent experience.