3 Benefits of Joining a Chamber. When consumers perceive that a business is a Chamber member, there is a 73% increase in consumer awareness and 68% increase in reputaion. When consulers know that a business is a member of the local Chamber, there is a 49% increase in favorability towards that business. Consumers are 80% more likely to patronize a business if they are a member of a local Chamber of Commerce. Source: TheShapiro Group Study on Chambers of Commerce.