I wonder if this is already happening at other places. I travelled for work this past week, and every morning, my travelling companion stopped at the same McDonald's, on the way to the office, for breakfast. He ordered the exact same thing every time: sausage McMuffin meal. No changes. No special instructions. And over the course of 5 days, he got 3 different totals for his meals. Monday and Thursday were the same. Wednesday and Friday were the same. Tuesday was unique. He noticed it when he was submitting his expenses at the end of the week. The only thing we could think of was that they were doing some kind of surge pricing, because the receipts appeared exactItly the same other than cost. The difference was only a few cents, but we both thought it was odd