So I've always thought about this but don't have time or space (yet)
Those nems are so cheap at petco, petsmart, etc., that it might be worth it to have a nem 'hospital tank' where I just buy them, nurse them back to health (so many are always bleached there), and then trade to local LFS just to restore them to the health they deserve and get them the heck out of the big chain store.
Problem is, would that just have those big chains getting more LTAs, etc., out of the ocean? I might just be making it worse for them.
Thinking is that just buy it anyway and keep it 'til it's healthy, if you have the room. Then pass it on if it's not what you want, but in the meantime you've saved the poor nem.
I dunno.