Buy in bulk and save BIG! BulkOfficeSupply has been an office supply vendor since 1989. During that time, they have gained years of experience distributing office products, which has resulted in great pricing on over 20,000 items for your company. A cooperative effort between suppliers and BulkOfficeSupply has allowed them to bring the Costco/Sam's Club style of shopping to business owners. Rather than buying only one or two pieces of a given item, you now have the opportunity to buy at the industries tightest margins by simply increasing your order to a full case.