Densuke Watermelon

Densuke is a Japanese fruit known for possibly being the world's most expensive type of watermelon, reaching prices up to $6,000 at auctions for top quality produce. The watermelon is black in color, crisp, and hard, with a different level of sweetness than other watermelons.

It also has very few seeds. This fruit is grown exclusively on Hokkaido, and it's produced in limited quantities, which puts them in high demand and at high prices. Densuke watermelons are usually packaged in cubic cardboard boxes for protection, and they come with certificates of origin included in the box.