good question - only one I ever tried the room started spinning (lol) and I got quesy (but I'm a lightweight).
I think a pack is around $250JD? and singles $50JD? Others will chime in I am sure - I have not bought them just seen people buy them around town.....but may be off on the prices.......

Oh and I think I have paid $5US for a pack on the beach but a bit cheaper at a local store for Jamaican dollars