OBI (Open Buying on the Internet) is a proposed standard for business-to-business purchasing on the Internet, aimed particularly at high-volume, low-cost-per-item transactions. OBI uses a number of security technologies such as the digital certificate to allow orders to be placed and filled securely. On average, 80% of company purchasing is for non-production supplies such as office supplies, cleaning products, and computer equipment. Making and fulfilling an order can cost an organization up to $150 and the seller up to $50. In the fall of 1996, the Internet Purchasing Roundtable, a group of Fortune 500 buying organizations and their suppliers met to develop an open standard for business-to-business e-commerce. The result - OBI - is intended to eliminate redundant work in purchasing, minimize errors, and reduce labor and transaction costs