A 10-year-old grilled cheese sandwich sold for $28,000 in 2004. Whose image was said to be on it?

A 1-pound tin of premium sevruga can go for more than $2,000. What is it? In American slang, what is a $10 bill called? A 10-square-mile area covers 6,400 of which units? A 10-year-old boy shrinks to the size of an insect and has adventures in which 2006 animated film? A 100-inch telescope collects 10,000 times more light than a telescope with a mirror of what size? What is a 1,000th anniversary called? A 1,085-mile waterway in China and a 2.5-mile waterway in Venice are both called what? Which French fashion house makes the famous perfume No. 5?