That house is in my town. If it goes wrong, I can go there and collect your money/items.
We have a lot of people in town that are from the islands and have extended families there, so his story about living in Trinidad isn't that abnormal. He is probably trying to save on taxes/import duties or get something you can't get in Trinidad. I know all the people I know from Dominica or Grenada have family who come up here to buy electronics and other high end stuff you can't find back home.
The house is in an older part of town, but certainly not in a bad area. I think houses in that area are typically 200-250K. Not that someone with a nice place can't rip you off, but it seems a bit less likely than if it was in a bad part of town.