For anyone looking,
1656 Alton Road Miami Beach, FL
has been stocking guanciale for the past couple months (02/12). Price is around $25 l/b. I'm not sure if Epicure's Sunny Isle outpost (17190 Collins Avenue, North Miami Beach) carries it or not.
Laurenzo's Italian market in North Miami Beach hasn't carried it in over a year (and doesn't appear interested it stocking again).
Also, Epicure in SoBe stocks squid ink in the same case as the guanciale for those interested.