Ticket sale for the Hatsune Miku concert is started. For Paris there are still tickets available. You can buy the tickets for Paris here:
Tickets prices vary from €35 – €65,00
Tickets for London are on sale now too. The tickets for the London concert are available here:
Ticket prices from £50.00 – £84.00
Tickets for the Cologne (Germany) concert are not yet availible. The sale has been postponed. Hope they will be available soon!