To be most accurate, those aren't the payment processing fees either. They are the blended rate, which include interchange, the payment processor's cut, the ass

To be most accurate, those aren't the payment processing fees either. They are the blended rate, which include interchange, the payment processor's cut, the assessment fee, etc. Most people don't know what a blended rate even means, though, so why bother using that terminology when I'm trying to save some smallco engineers on HN a few points on their startup's margin? Feel free to replace my use of interchange with 'blended rate' if that helps.