- The rate of exchange they apply, not really a hidden cost at all but rarely the best on the market.
- The transaction fee that is applied to ATM withdrawals and credit card transaction shown as 'non sterling transaction fee' or similar.
- ATM cash withdrawal fees, very common in the USA. Together with the non-sterling transaction fees these can amount to a significant sum over the course of a year and how do you expense them? There's no invoice, just a bank statement entry.
- By and large the price advertised should be the price paid
- Hidden charges should be incorporated into the headline selling price
- Where there is no choice. eg paying an online booking with plastic, don't charge extra for it
- Tips should be optional and not part of the employee's basic wage