I think it's very dependent on the business. In a couple of minutes research I saw one site which estimated the average CC cost to be 2.08 USD versus 0.30 USD f

I think it's very dependent on the business. In a couple of minutes research I saw one site which estimated the average CC cost to be 2.08 USD versus 0.30 USD for cash, whilst another site estimated the cost of cash handling to be anything between 4.7-15.3% of the money taken in [https://www.businesswire.com/news/home/20180130005244/en/New-Research-from-IHL-Group-Shows-Retailers%E2%80%99-Cash-handling-Costs-Range-from-4.7-to-15.3-Depending-on-Retail-Segment https://www.businesswire.com/news/home/20180130005244/en/New...] (I think CC costs are also likely lower in Europe - cashback credit cards are less common/rewarding, debit cards are a lot more common)