there is one in the center of town area, sort of in a tourist area. its like a small shopping village behind a bakery. just came back from there. and I used the internet cafe there but don't remember what I paid.
I just returned from Las Terrenas.
There are plenty of internet caf?s in the village center and they all charge 2R$ per minute which is 120R$ per hour, which is incredibly expensive compared to Santo Domingo where I paid 35R$ for an hour.