As more people flock to the Internet to shop, governmental entities across the Miami Valley have earned millions of dollars selling surplus property online. Last year, RTA, which participates in GovDeals through Montgomery County, sold several vans, a few dozen old buses, parts and equipment and other goods. Buyers paid $155,900 for the items. GovDeals is one of the most popular auction systems in the Dayton region among public jurisdictions. The company boasts 425 clients in Ohio, 3,900 nationwide and 1.5 million registered bidders, according to the company.