New World Design had budgeted $85,000 for the balloons, barge rental and other set-up costs, company partner Roberts said. On top of that, the city estimated it would cost $100,000 for services, including security and sanitation, that would need to be reimbursed by the company. That figure was higher than the $20,000 to $30,000 the design firm expected based on expenses of recent marches, Roberts said. But the city considered the installation to be more like a festival than a march, due to the location and potential crowds it could attract, he said.