You’re arguing about nonsense scenarios. Hypothetically every business could also tack a “convenience fee” of $20 on every purchase like TicketMaster and make 2

You’re arguing about nonsense scenarios. Hypothetically every business could also tack a “convenience fee” of $20 on every purchase like TicketMaster and make 200k off this imaginary customer. Also even if a business rounded up every transaction, the expected benefit is 2 cents per transaction vs fair rounding, not 4 cents.