Samuel, that is a reasonable price for that boat tour. Did you go into the cave that opens up to a big lagoon with a small island in the middle? I think its the first photo on the site you posted. A lot of locals will sea kayak there and get married on that island. Jumping off the cliffs there is fun too, you can go as high as you dare. My friend has a small catamaran boat that turns on a dime and took us in a bunch of cave. Some we had to time with the waves to get into and out of, crazy stuff. The beaches just north of where you left for the trip are really nice. Barking Sands beach is my favorite on that side, not a lot of people.