I forgot to add, depending on the port of entry, packages are radiated before they get to you. This is really good at killing seeds of many kinds. Anyone with seeds coming in through New York should worry more than ones that comes into San Fransisco. Down in Miami they have a place called "the smokehouse" for any packages they don't permits for. Having the packages coming in with the permit number and it goes through without damage because they know what it is. This kind of thing got bad after 911 because they are worried about all kinds of things now a days. The rule about the permit has been around for the 28 years I have had to worry about it, but only recently did they announce they were going to start enforcing it.
On the website, I just looked at it again, but had first seen it a few years ago when I first started growing these super hots. They do have an impressive site. Mine is nothing compared to a set up like that. One thing that is good to know, when someone has that many types of seeds, are they brokering them from many other people, or are they growing most of them locally. Then, how close are they being grown together and what is the chance with genetic contamination.
On shipping costs of seeds. It really isn't all that bad. I just sent some cycad seeds to Australia and it was only $8. It's weight that kills you. If i got in 100 good sized Dioon seeds from my source in Germany, it might cost $95.