The exchange rate can go up and down everyday and sometimes many times throughout the day.
You can visit El Banco Central de la República Dominicana in Spanish and The Central Bank of Dominican Republic in English to learn about all the banking and money issues in the country. To find the exact exchange rates daily to buy and sell monies in English.
This is a great tool for finding the exchange rate in Dominican Republic and almost any other country you might want to travel to. All you need to do is enter the amount of money and where it is coming from. I am offering two different exchange rate companies to check the rates as each are a little different sometimes.
Dominican Republic is the DOP (Dominican Republic Peso).
Gracias a coinmill.com