That happens in lots of stores, not just Walmart!
Another thing I noticed: charging much less in the international aisle for the same sort of item. So, 6-piece box costs more than 8-piece box in Hispanic foods. That was a grocery store, not Walmart.
Yep, there are lots of scams like that. They are allowed to get away with this kind of stuff because there are so many brain dead zombies on “autopilot” buying without any question or complaint.