used to be that you could get super-duper deals on electronics, especially cameras, its not that way anymore. You can usually do better at home when it comes to electronics. Jewlerly is still a good deal, you need to be an informed consumer, you need to know what a similar piece would go for at home.
Liquor, perfume, linen,and cigarettes are still good buys in the Caribbean
Spices are great buys
Mexican vanilla is still a great deal.
Buying loose gemstones is a good deal, you don't have to declare them, they are considered rocks.
St. Maarten and St. Thomas are still your best shopping ports.
You can get some decent deals on silver in Mexico
Local craftsgoods are always a good deal.