Yea I once ordered those wings for my kroot mercenary army, big mistake.
anyhow, that link also has has pictures of ghouls with gargoyle wings, which I think I have seen before thinking about it now.
anyhow, friend of mine wanted to order some gargoyles to give some of his nid warriors wings, I think I might be able to snag the remaining ones for this, still I think I would need another box of both to fill out the unit.
Really, I am quite surprised there is no manufacturer that makes Not-furies as a alternative, considering how popular that market is these days.