Well, frankly saying, the price will be a bit higher than most of the VCC account you can find on the market now (entropay, etc), my previous buyer bid it with $500
There's a reason for that - the account is rare, and with that service, you could almost build a business on your own
If you're a pro, you will know that getting Japanese details is harder than getting UK and US details
Many of the Japanese service only accept domestic cards, and with this account you will have the ability to shop on JP website freely
And there's lots of potential business opportunity in this