Buying insurance can be confusing, but when the unexpected happens ? a house fire, a fender bender or a broken bone ? it's a relief to know that some of those financial losses will be covered. But how do you know how much coverage you need? And what questions should you ask before buying a policy? Many consumers aren't sure. Insurance coverage is far from one size fits all, so here's a look at mistakes some consumers make when buying insurance. 1. Assuming insurance is out of reach. The U.S. Census Bureau reports that 48 million Americans had no health insurance in 2012. And about 30 percent of U.S. households have no life insurance, according to LIMRA, a worldwide research and consulting organization for insurance and financial services. In some cases, consumers skip insurance because they think it's out of their budget. Often, that's not the case, according to Marvin Feldman, president and CEO of the LIFE Foundation, a nonprofit organization that educates consumers about financial planning and insurance. The LIFE Foundation collaborated with LIMRA on the 2013 Insurance Barometer Study, which found that the average consumer thinks life insurance is three times more expensive than it actually is. "[Consumers are] not researching it to determine what the cost is," Feldman says. When buying health insurance or property and casualty insurance, ask about potential discounts. "Two-thirds of consumers don't realize they can get financial help if they buy their own health insurance, and they can get financial help if they go and buy in these health insurance marketplaces," says Lynn Quincy, senior policy analyst with Consumers Union, a division of Consumer Reports. "You may be way overpaying if you don't investigate this possibility." While health insurance discounts are often income-based, homeowners and auto insurers offer discounts for everything from being a member of groups like AARP, to being a good student or a good driver, to having a home security system.