Depends if your talking Negril or OR. For the Negril side, there is a zip line at YS Falls, which is just one traverse and not as exciting. I think you just pay for it at the falls. We went to YS once, but didn't do the zipline. We want to do the Jungle Canopy Tour zipline at Montpelier Outpost this weekend, which is south of MoBay and is operated by Chukka. I called the tour desk at CN and it is $100/pp if you book at the resort tour desk, but is only $90/pp if you book directly through Chukka. For any questions about stuff like this, it is best to call the 800# and ask to speak with the tour desk at that specific resort.