Wish I had seen this discussion earlier. Went to Jupitor last month and paid with a thousand Baht bill. The change came back as if I had used a 500 Baht bill. Of course I could not be absolutely sure, so I let it go, but after reading this column, I am more inclined to conclude that they deliberately short changed me. In future I would advise everyone to make sure they bring smaller notes to lessen the chances of misunderstandings.