It may be against the rules, but since I am not selling anything….
Look for the ads on the forums about Charles Chang, with tmtelcomm.com , in Miami.
Not the cheapest carrier, but incredible stable and you could open an account with only $500, and go from there.
Weekely CDR, never had a trouble with them, even with extrange destinations.
Again, not a agent of this company, only a satisfied customer.