I only know of one site that would not sell with a foreign IP, newegg.com. Never had a problem with other sites but Costco that cancelled my order saying they will not ship to any freight forwarding when given my Miami EPS.
I signed up recently with Aeropost and have gotten totally addicted. I find something on Amazon, Costco or elsewhere and it is here in my house in about 10 days. It's a Miami address and much less expensive than EPS. Check them out, I highly recommend them.