Most Lammet blades I know of in the US are sold through Blade and Physical Chess
http://www.blade-fencing.com/cgi-bin...1560616206281+. I tend to think they are a bit expensive for what is a somewhat mediocure to average FIE blade. IMHO you would do much better with a Vniti, Prieur, LP or StM blade. All of those are about the same price as the Lammet depending on where you buy them from. And in case I have not mentioned it before, Vniti makes the best foil blades in the world as far as I am concerned for about the same price as a Lammet. Their price/value/durability combo just can't be beat. I have also been quite happy with the Prieur Chevalier FIE blades. Very light and fast, good durability for the price and a nice and fast overall feel. The Fencing Post and Blue Guantlet sell them.
For the LP blades, LP USA is the best place to reliably get them although when Saul has them the Fencing Post is almost $40 dollars cheaper (sorry Craig). For the StM either ELI or the Fencing Post. For the BF/Uhlmann either the Fencing Post or Triplette (their house brand is BF although many consider the Uhlmann and Cartel stamped BF blades to be superior, myself included) and for the Prieur FIE either The Fencing Post or Blue Gauntlet. Hope all that was some help.