Well,
thanks for visiting the site. If you want to talk about a trade please write me an email. About seeds, they're as much viable as possible, I can't assure of course 100% germination ratio as surely success, since it depends on growing techniques and so on. For Ephedra, I had no success with E.sinica/sinensis, only with E.fragilis, E.viridis, E.nevadensis. But yuo could try anyway, what's the problem?
Ciao,
Luca