The Route Taxi way is the cheapest to get to Black River and could make quite the adventure - and take up the better part of your day. I'd hire a driver to take you there - around $35US per person. Have them take you to a place called "Gateway to Pelican" at Parottee Beach - you can catch one of their boats for $10US per person.

We did that yesterday - what a great day. I learned that the way I'll do PB from now on is just that way - JUST Pelican Bar - no mixing it up with a Black River cruise or a ride to Treasure Beach (the boat ride back from Pelican Bar to Treasure Beach hits head water and can be pretty rough).