Welcome Edju!!!! You are gonna love Jamaica. We love to help here so feel free to ask anything.

I quit smoking a year and half ago but I can give my some info. I smoked Marlborough Lights (really Ultra Lights but could not find them in JA). To me the cigarettes tasted a bit off and stronger but that could just be me. So for name brands I paid about $5US a pack. Not sure where you live but some places in US are higher than that. I always took a carton with me just for convenience. That said there are cheaper options for smoking .... CravenA, Matterhorn, roll your own.....all which are cheaper but too strong for me. So it depends a bit on your tastes. There are people that walk the 7 mile beach and sell them and most stores sell them. Depending on how many packs you will need - you can talk to someone about getting you a deal on a carton (Pinkie at the beach Resort BarBBarn has a little store and can get you good deals on carton).

Enjoy your reach and I hope you will share your thoughts when you get back.
Bless