EVERY SINGLE TIME!
Tonight I'm lookin through moss listings cause I'm detailing my new chamber and I run across "RARE FINE TEXTURED SPANISH MOSS". I open it up and low-and-behold its that java fern crap you see at like PetsMart for Aqs'. Where in the world did they get spanish moss (parasitic epiphyte) out of an aquatic weed? They couldn't possibly be any more opposite, one lives in the water and the other in the air.
I see something stupid like that everytime I stop there. Thats why I have NEVER bought anything off of Ebay.