A lot of the world's most expensive foods get smuggled, but not always for the same reasons. And some smugglers even say they have legitimate reasons for illegally cashing in. We take a look at six of the world's most expensive foods we've covered and why they are smuggled. For all of them, the high prices come with high demand. This creates a big incentive for smugglers, who are looking for ways to cut corners and cash in. So why are smugglers targeting these foods? And how are governments and food producers fighting back?