Depends where you are. I was Delancer's internet launch customer five years ago when I lived in Perla Marina, Sosua.
I now live a little bit towards Cabarete and they moved my service for me. I pay US$95 a month for 3mbs and I get a Florida IP address.
Their customer service is superb. Their technical backup is excellent and their internet speeds are what you pay for. I can stream Netflix in HD, browse the net and listen to HQ radio streams at the same time.
In the five years I have been with them, there has never been an entire day without service, even after someone drove a truck into a telegraph pole on the Sosua highway.