And to really drive home your point, > a five cent flat fee doesn't matter on a $20 lunch, but it's over 3% of a sale for a single $1.60 donut. Now do the mat

And to really drive home your point, > a five cent flat fee doesn't matter on a $20 lunch, but it's over 3% of a sale for a single $1.60 donut. Now do the math for profit instead of revenue