The world’s most expensive rice comes from Japan, produced by a company that makes only a limited quantity each year. This rice is so exclusive that only one kilogram costs roughly the price of a smartphone. Only 1,000 boxes of this rice are produced annually, making it a rare culinary luxury. The world’s most expensive rice comes from Japan, produced by a company that makes only a limited quantity each year. This rice is so exclusive that only one kilogram costs roughly the price of a smartphone. Only 1,000 boxes of this rice are produced annually, making it a rare culinary luxury.