If you prefer not being ripped off I highly recommend getting a real taxi. When you leave the airport in SDQ you are dumped outside but just re-enter the airport ignoring everyone mobbing you and go upstairs to the departures drop off on the upper level. The local taxis & guaguas are up there dropping off people leaving SDQ.
I was hanging outside smoking when my flight was delayed 5 hours last week and was talking about rates and not only was the rate in pesos but it was also about a fourth of the cost as the tourist taxis downstairs. The rates on the link above are definitely gringo prices and they don't even come with KY!