Although mahogany is native to the D.R. it is not what is been used for making furnitures. There is a ban on cutting mahogany trees here, pretty much all wood is imported.
What you can BUY here depends on how much money you are willing to spend. We recently used yatob?, a Brazilian hard wood on some projects at home, it is darn hard and frigging heavy. There are other options, but this one is similarly priced to mahogany, looks very good and it is VERY resistant.