Barry points out over and over that growing Sarrs in you backyard* and shipping their seeds to every corner of the globe is not conservation. Conservation is protecting, preserving and restoring the natural habitat and the natural/native populations.
Then there's the possibility that the guy is not selling oreophila seeds at all, just some other species or hybrid. After all it will take 2-4 years, if ever, for some one to determine what the seeds actually are
*Unless of course your backyard is their natural habitat. Lucky you, need a housesitter?