Business Owners Trade Alliance is the largest barter exchange serving Lehigh Valley, Berks, Lancaster, York, Harrisburg and the surrounding area. Members in the network can barter with over 75,000 participating businesses for thousands of types of products, services, advertising and vacations. Bartering is a powerful tool as part of a business marketing plan. It helps companies leverage their excess time and inventory with the ultimate goal to increase profits, improve cash flow and win new customers.