I had an "All Inclusive" package deal that included transportation to Punta Cana from the airport, so I don't have any other info for you. Just wanted to note that Punta Cana became one of my FAVORITE vacation spots after visiting it several years ago. The beach, the Gulf, the weather, the food, the people... all great!
Unless you're on an all inclusive resort, do not use the water for anything other than showering. That includes brushing your teeth. Use bottled water! Even then, check with the hotel or your tour guide if in doubt.
If you can ask someone at the airport how much it should cost, then you'll have an idea if the driver is taking you for a ride, literally!If you do an all inclusive deal, this is all taken care of. I have not been to Dominican Republic but had friends who did go a few years ago. They were fine on the resort, but use caution when you are out and about. Remember,you ain't in Kansas anymore,Toto.
I am staying at an all inclusive place but I booked thru Yahoo Travel so I dont have a transfer. I did look up shuttle services on the internet and there seems to be a broad range of prices... We are staying in the Uvero Alto area at Dreams Resorts and Spas.