On a French forum, someone was looking for an inner blade. I proposed the classic 05, Fang Bo B2 and others. People despised them, ''if it's 50€, it must be crap, Butterfly 180€ blades are worth it because of the quality control making them steady models after models''. ''Have you tried the Yinhe Pro 05?'' ''No, but it can't be anything else than crap''.
On another topic ''Viscaria's have so much variation!''.
Butterfly marketing is quite efficient.
It's a matter of established opinion, too. In the 60's-90's really nobody in the general public had anything like the Internet. Information was spread thin, ordering a random blade from the other end of the world and having it arrive within 2 weeks was unthinkable, that was for sure just money thrown away - provided you actually had some kind of means to pay a person on the other end of the world in the first place.
Butterfly was already premium then - and had resellers all over the world.
Their money goes to R&D, sure, but also a lot of it goes to contacts, sponsorships, contracts with trainers and coaches... They (try to) do that at every club that has people playing in national levels so I can imagine it racks up costs quickly.
So efficient - idk, but effective, absolutely

Funny thing is, there's a bigger club not too far from here with a few Chinese players and Chinese trainers - and suddenly you see Yinhe, Sanwei, DHS being used there!