There are marks from items overlapping on both sides. Trading cards and postcards will generally be packaged with cardboard reinforcement on both sides. Sleeves and waterproofing measures will also be taken. Since I also sell on other sites, items may suddenly become out of stock. Please comment if you would like a hard case. Discounts are available for bulk purchases of trading cards. Price negotiations are possible only if you are ready to buy immediately, but I may not be able to meet your expectations for items with a lot of likes or that have just been listed. #OnigiriSkz