When was the last time you been to a gas station and noticed the cash vs credit pricing? Or maybe you're a little short on cash and just need to use an ATM. You won't be surprised to see a customer surcharge on both examples here because gas stations and ATM's have been surcharging for as long as they've been around.
What about paying a phone bill online or an electricity bill? Same program! Even Kroger, one of the biggest publicly traded grocery store chains in the United States use a cash discounting program to offset costs. In fact, many grocery stores have implemented a small convenience fee at checkout, just to strengthen their bottom line.