they are a reseller, the roots are likely overseas imports but i'm sure they'll be fine. They should include country of origin or import in their description in my opinion.
The company resells cut flower plugs and corms/bulbs/roots in fancy packaging for an exorbitant premium. I have accounts with the major plant brokers and can't believe this company charges $19 for 3 lisianthus plugs which cost at most 1.89 for the Japanese seedlings and many are .30-.50c
It's a very fancy site targeting instagram gardeners and while they say they focus on rare flower gems-it's just marketing. My experience as a floral designer now gardener is that all these plants can be found with some effort but most don't want to put in the research. what they sell is as simple as typing the name into a plant brokers catalog.