Just as you need the proper car seat when bringing home a baby, you also need a way to bring 12 x 12 paper home without damage. As gentle as the sale person tries to be when placing the paper sheets into a plastic shopping bag, we have all gotten home with that special paper torn or wrinkled. (shaking you head now right)
Try this tip:
Keep 12 x 12 page protectors in your car at all times. After paying for your paper ask the sales person to place the paper into a page protector before placing in the store bag. This will help keep the paper flat and clean. Several sheets will fit into a singe page protector. The Dollar Tree sells packs of 12 x 12 page protectors, 10 for a $1.00. Think of it as insurance for the expensive paper.