Quoting:The Japanese prefecture auctioned off 48 bunches of 'Ruby Roman' grapes at an average price of 27,000 yen (about $245 USD). It was the culmination of 14 years of cultivating these "dream grapes", with tomato-red skin and noteworthy size ( a single 'Ruby Roman' grape can measure nearly 3 cm in diameter.)
I hope the buyers saved the seeds after they ate the grapes!
We had some similar grapes one time at a Vietnamese wedding reception. I doubt that they paid that much for them, but each grape was the size of a ping pong ball. I've never seen anything like them before or since...I'm sure that they had them flown in from somewhere.
Yes in Japan we have a very large variety of grape and wonderfully sweet, usually retail for about 10 dollars for
a small bunch. They really are the size of a ping-pong ball! (Pione grape) grown in Okayama prefecture.