 The first Ruby Roman grapes went on sale in August 2008 for 100,000 Japanese yen (US$910) per 700-gram bunch, or $26 per grape.They are said to be the most expensive variety of grapes.In July 2016, a single bunch of Ruby Roman grapes, containing 26 grapes at a weight of about 700 grams, sold for 1.1 million yen (around $8400) in the year's first auction at a wholesale market in Kanazawa.