FOREX is not dealing with RUB at the moment because of the war in Ukraine.
In Costa Rica, cash is the most common payment method, and sometimes there is a shortage of Colón. As an alternative, you can bring american dollars to exchange in Costa Rica or pay with directly.
Tips! Costa Rica is a country that relies heavely on cash. Bring cash and a card for withdrawals if needed.
Delivery to nearest post agent
Save the receipt and change back for free
Buy currency in advance, no need to search for ATMs