Costambar and Puerto Plata are on the north coast, so you might get more responses to your question if this thread was moved to that forum. It is very easy to buy an apartment, less easy to sell one, which is probably why there are a lot on the market. Many are not advertised on the internet; you'd have to be here and look around. A 2 bedroomed apartment in Residencial Atlantica in Costambar was available a short while back. Price range could be anything from US$35,000 to $60,000 depending on condition. Plus maintenace fees etc. Proceed with extreme caution as outlined in post 2.