Launching into an immediate apology for speeding can bring an extra charge if the officer had initially stopped you for a faulty tail light.

FORBES: The Most Expensive States For Speeding Tickets 2007

If a customer decides to invoke compute capacity on demand, there is an extra service charge for that month.

FORBES: Oracle Cloud Success Triggers Oracle-Derangement Syndrome

Under such a system, for example, a store owner could give a discount to someone paying with an American Express credit card, charge extra for use of a Visa charge card and leave the price unaltered for a Visa credit card.

FORBES: Why You Will Soon Cut Up Your Debit Card

Some routes for walking through the station incur an extra rogue Oyster charge.

BBC: Paddington walk incurs ?4.60 erroneous Oyster charge

Arji Lans Bovenberg at Tilburg University in the Netherlands (born in 1958) wonders if parents should be given an extra vote at elections for each young child in their charge.

ECONOMIST: Charlemagne