it doesn't make much sense that its bulk mailings would be shipped that far for posting
My scant issues of "Covers" are boxed away, but I would keep an open mind. Many businesses hire outside firms many miles away to do the actual printing and mailing for them. Only the originals would have to be shipped to the printer along with the mailing list. Thus the mailing firms are the experts at sequencing/traying the bulk mails, which otherwise can be a hassle for each permit holder to master.