HomesUSA.com President Ben Caballero has been the country’s top producer in sales and transaction dollars for the past six years. With 2,491 home sales totaling $1.022 billion in volume in 2016 and more than 13,000 home sales for more than $4.3 billion between 2010 and 2015, Caballero credits his success to an online listing platform he developed that streamlines the MLS marketing process for homebuilders, charging a flat fee instead of commission. The former homebuilder says nearly all of his transactions are new homes.