One of the Rules of Terraforums is that you are not aloud to openly discuss any vendors other than flytrapshop.com that are based within the US... Wistuba, BE, EP, MT, etc are ok... No sales or requests to buy etc either....
as far as where to locate cephalotus, there are a few places here in the US that you could probably find using a simple google search, there is only one species, like flytraps, but numerous color varieties, and only 2 named, registered cultivars, and several unregistered cultivars....