resident status in D.R.

I was told that any one moving there to live should get resident status ,then they can get things shipped in at a much lower cost .Is this true ,or to what extent.

This is true. You would need to have your residence status prior to moving your goods down here. We suggest you visit the New York Consulate that has an office to help you with this process and with clearing customs.

Is there a counsulate in Miami

There is a consulate in Miami, but as far as we are aware only the NY consulate has the office to help you with your customs procedures in advance. You can request your residence visa through the Miami consulate, while consulting the NY consulate on customs matters.