I’ll save you the trouble of reading the story; the “sneaky ploy” is when the person at the counter asks if you want to upgrade. Thats it. If YOU sign an agreement for a higher priced good or service when you were asked if you would like to upgrade...you waive the right to be shocked it costs more. Thats on you.
“I went through the drive through the other day and got scammed out of money! They asked if I would like to make my #2 combo a large and I said yes, of course I want a large combo. Sweet! Turns out they charged me more money for it! No one told me more was going to cost more! I’ll never eat there again!”