They use the euro € in Lativa (and the neighboring Baltic countries), you'll find costs generally very low in Riga especially when compared to Western Europe. Here are some examples taken from Latvia Travel: Three-course meal in a restaurant 20 - 25 euros Lunch 3 - 5 euros Glass of wine -15 cl 5 euros Glass of beer 0.5 l 3 euros A Latte - 3 euros Public transport ticket for one trip - 1.15 euro Public transport ticket for a day - 5 euros Taxi ride from the airport to the city centre - 11 - 14 euros Taxi boarding price 1.70 euros / Taxi Fare (1 km) 0.50 euros.