Another point that I thought of is , when I'm looking at a shelf full of figures, I always go for the one with the best paint apps, less mold flashing and best transformed appearance. the toy is my first priority but in this case, generally the packaging will all be in pretty good nick. if a paper hook is damaged, I'm not really worried.
I am only really worried about packaging when it is so damaged that the integrity of the figure coiuld be compromised.
still, if there are two figures that appear to be of the same quality paint wise, i will always go for the one with the shinier packaging.
My previous comment still holds for the retailers though and I think Defcons customer service comment is also very relevant.