Right, BUSES (Minivans) are $2 each way per Person! Traffic is in the afternoon very heavy , so take the Bus at least 2 hours before sailing.
Maho Beach has a nice bar with quite pricy drinks though! The beach is beautiful!
There is a supermarket on the other hand of the beach, very cheap cooled drinks available!
$ and Euro are taken as 1:1 so pay with Dolllar , its much cheaper !
Enjoy your trip, Maho Beach is awesome !