I dont know how you go part way through the postal system. I know we send trucks to presses to pick up subscriber copies (mail) and other trucks get wood pallets of magazines that go to distributors like Natiowide or Hudson news or old Charles Levy. One thing I have seen, smaller title magazines have less magazine bundles to a skid, so they stack the shorter skids sometimes 4 high. Subscriber mail goes on plastic skids that have 9 contact points on the item below it , so between moving around and unstacking with a forklift I can see covers getting destroyed when they seperate the skids.