butterfly > wingblade ?

hello everyone,
i think 15^50 req8 wingblades goes for ~30-40k but im quite unsure what a butterfly with the above stats can go for because i can't find any reference.
on the one hand i can't see a high demand specifically on butterfly swords because the only difference is the name on it and i don't know if a buyer will pay extra cash for that fact, on the other hand i haven't seen much butterfly swords with the above stats yet which maybe means nothing or maybe indicates a not so common drop.
What do you think ?
thx for reply