There was a time when I used to bring items to Jamaica for friends. They would pay me for the items upon arrival. Sometimes these items were either unavailable on the island or too expensive. Mostly it was high tech stuff that was not easily available on the island, but in some cases they wanted a specific make or model of an item that wasn't available on the island. I would always pack the items in checked luggage and remove them from the packaging. I was fortunate that customs never questioned what was in my checked luggage.

Good luck!

Enjoy,

VVHT