Stew.. even though the majority of new posters are shipped rolled, almost every title also gets shipped folded to a small minority of locations and during the time of Goodfellas, the number posters shipped folded was much greater than it is today as it was a transitional period.
last week I had a guy turn down a NM Star Wars style-A because it was folded. well, good luck trying to find the same poster for the same price.
Folds don't bother me, I know how to deal with them. My preference is to lay lots of posters flat. Over time the folds reduce