Buying Authentic Habana cigars in a country that also manufactures and exports cigars (Mexico, Dom Rep, Honduras, etc.) is a VERY RISKY proposition.
If you are looking for a few boxes of the real thing - I'm afraid you may be going about this the wrong way.

CAVEAT EMPTOR !!

Thanks to some friends here, I've found methods of acquiring boxes from non-Mexican exporters. I guess I was just hoping to grab a few while I was down there. Sounds like that may be a challenging task.

I'll send Slim an email.

Thanks everyone.