We bought 2 Tracfone PAYG phones at Walmart last month: 1 was $10 and can't do international calls, 1 was $20 and can. We then added airtime by buying Tracfone cards. You can activate them by phone. As it's a 1 800 number, you can do it from your hotel's or villa's phone without cost. It then lasts a few weeks or months depending how much you put on it, and the expiration date gets extended when you add airtime, so you can give the phone to someone who's travelling to the US within it, or keep it if you're travelling often. Very easy.