Good day and welcome to TechJamaica.
Most companies that ship to Jamaica will do so through DHL or FedEx. This will cost you much more than if you use a freight forwarding service in most cases. Sometimes it works out better - like some purchases with lowered shipping costs - and as an INDIVIDUAL you may get away through customs doing so. As a BUSINESS you won't be so lucky.
The best bet is to use your USA freight forwarding address and just send the items there. If the company has an issue with the address you'll know at checkout.
Knowing the solution doesn't mean knowing the method. Yet answering correctly and regurgitation are considered "learning" and "knowledge".