The official currency in Costa Rica is the Colon. the exchange rate varies from day to day.
The sales tax rate is 13%. Always find out if the sales tax is included in the price of the goods you are purchasing. In restaurants and bars an additional 10% service tax is charged. Due to this additional 10% service charge, tipping is optional there.
Do not leave jewelry, cameras, or other electronics unattended in a car. Carry your wallet in an inconspicuous place.