Has anyone had any experience with TeaGschwendner?

http://www.teagschwendner.com/US/en/HomePage.TG

They have a very large assortment of infusers

http://www.teagschwendner.com/US/en/Shop_Permanent_Filters.TG?activeID=1119&parent_id...

including what looks to be a copy (knockoff?) of the ingenuiTEA.

They have more detailed brewing instructions with each tea than I have
seen elsewhere, including weights:

http://www.teagschwendner.com/US/en/Shop_Start.TG?activeID=1063&parent_id=1137

Comments?