Well.. the definition of laundered is actually washed AND ironed....as to whether I would be bothered?...might be a tad annoyed but wouldn't do any thing about it..just get the iron out..
You could always do what I do if I'm selling brass or silver which isn't in its prime and say "likely to crease in the post" (I say "could do with regularly cleaning")
i would expect anyone buying clothing from bay woud actually want to launder it themselves on reciept and so whether the seller ironed it or not would make no difference
I was slightly peeved when I bought a jigsaw puzzle and one piece was missing but I didn't do anything about it. It was advertised as complete and I do not like being lied to so I think if it has been honestly described I would just accept it.