OK, Maybe a cab from the airport sounds better.
Or rent a car. Thought I saw on a site I could pick up a car at the airport and drop off in PDC.
I've done alot of trips to places along the coast. If you are thinking of a taxi rather then the bus, I would just book a private transfer as it will cost you about the same.
Cancun Valet, USA Transfers/Entertainment Plus, Akumal Transfers, they all have about the same prices. (Do not book with Get DITA. Used to be fantastic but raised their rates ridiculously in November.)