Don't assume you'll save at duty-free shops

Sure, it's tempting to buy anything that piques your interest in a duty-free shop, especially if you're trying to dump currency that you won't be able to use back home, or if you're bored and killing time at an airport or on a cruise ship. But avoid buying easy-to-find goods---liquor, candy, some jewelry, electronics--unless you're really sure how a duty-free shop's prices compare with those at home. Fodor's Asks: Have you found good deals shopping duty-free?