Black Densuke watermelon in Japan sells for a mere $ 1 . Nearly 18-pound melon is grown only on the northern Japanese island of Hokkaido . There 's nothing better than a sweet , juicy watermelon on a hot summer 's day , right ? It is one of only a few varieties that is made available each year . Buyer says he wants to support local agriculture , according to an official .
Black Densuke watermelon in Japan sells for a mere $ 1 . Nearly 18-pound melon is grown only on the northern Japanese island of Hokkaido . It is one of only a few varieties that is made available each year . Buyer says he wants to support local agriculture , according to an official .