Yea, I noticed this same thing (the fee for public toilets) on a trip to Bolivia earlier this year. It seems the same as government agencies that split out the

Yea, I noticed this same thing (the fee for public toilets) on a trip to Bolivia earlier this year. It seems the same as government agencies that split out the cost of their downstream credit card processing fees and optionally add them to the price of their product (like paying your water bill for instance). So rather than doing the most efficient thing by enabling online processing building in the transaction cost, the consumers are all incentivized to stick with paper checks and the water department carries on assuming that managing the incoming paper checks have no associated processing cost because the cost is internal and they don't have a third party charging them. This seems to be more common in the public sector. It happens in the private sector but, in my experience, when it does it is with small mom and pop companies that are similarly incapable of seeing the big picture.