Just got a mail from Helsinki site regarding Single Event Tickets Sale info.
"As a subscriber to our newsletter, you have the opportunity to reserve the best seats in the house for Worlds 2017 events before the tickets officially go on sale. Tickets will be available for newsletter subscribers on the 1st of October at 9.00 AM (EET). Click the link below to enter the ticket office. Don't miss your chance!
We look forward to amazing performances and the great drama of sports. Ticket prices start from €20.17. Family tickets are from €58. Tickets for the Exhibition of the Champions for the whole family start from €99.60.
Please note that the online ordering opens on the 1st of October at 9.00 AM."
"As a subscriber to our newsletter, you have the opportunity to reserve the best seats in the house for Worlds 2017 events before the tickets officially go on sale. Tickets will be available for newsletter subscribers on the 1st of October at 9.00 AM (EET). Click the link below to enter the ticket office. Don't miss your chance!
We look forward to amazing performances and the great drama of sports. Ticket prices start from €20.17. Family tickets are from €58. Tickets for the Exhibition of the Champions for the whole family start from €99.60.
Please note that the online ordering opens on the 1st of October at 9.00 AM."

) but suddenly it seems I might have a chance
. I've seen pre-sale tickets have just gone on sale, but I'm not sure how can I get them. Is subscribing to the newsletter enough or do I have to do anything else? 
...are these the only tickets left in the arena or do they put new ones up for sale? If not, it seems the arena is really really full! :eeking: