Alternative lenders such as OnDeck and CAN Capital still rely on old-fashioned loan brokers to find their borrowers despite their high-tech packaging. These loan brokers are independent agents who funnel cash-strapped business owners to be sold high-cost loans. They charge sky-high commissions, usually hidden from merchants, which can double the cost of the loan. Some worry the brokers steer costly loans to small businesses that can’t afford them. “It’s a direct parallel to what happened in the subprime mortgage space,” says Mark Pinsky, CEO of CDFI advocacy group Opportunity Finance Network.