I have yet to see any wizard with the fairy wings. I think they look amazing, yet here is the problem: You can't outfit your wizard to look good in them! Particularly the hat. There is no good hat that suits a fairy outfit. Fairies don't wear viking helmets, top hats, or officer caps. Maybe the closest thing is the smurfy-looking hat.
Suggestion: Make head gear suitable for a fairy. A garland, tiera, or a ribbon maybe. I predict you will then sell lots o' fairy wings!