Cypriots use the Cyprus Pound as the legal tender, although because of Cyprus' reputation as a holiday hot-spot, you find that Euros are acceptable in many places.
Credit cards are also welcome in most larger shops and restaurants in the main tourism areas such as Larnaca, and you can easily withdraw money from ATMs on the island using British bank cards.
Tipping is expected in restaurants where a service charge of 10% has not been added, although you may want to leave a little extra if the service is good, and you plan to return to the restaurant.
Bargaining is expected in most market places, and you can get a good discount if you work hard.