Reply #13: All that makes perfect sense but

[golfguru]

I just wanted to make it clear that handling cash is not without cost.
The retailer has to safeguard the cash, count the cash, take some of
it to the bank, the cashier must be stocked with various bills and coins
to offer change, retailer has to guard against counterfeit bills, etc etc.

None of those costs are incurred with a debit or credit card. The transaction
itself is faster with a card compared to cash transaction.