Zenimax have announced that ESO will be pay-to-play and subscription based, with the first 30 days free. Afterwards you will need to pay a monthly fee of $14.99/€12.99/£8.99. Do you still intend to play this game knowing it will use this payment model, or that these are the prices you will be charged to play?
There will also be an in-game cash shop, so players can buy "fun stuff" and services: http://esohub.de/news/154-eso-interview-abomodell-itemshop-entwicklung
The full interview about ESO's payment model can be found here: http://www.gamestar.de/spiele/the-elder-scrolls-online/artikel/www.gamestar.de/spiele/the-elder-scrolls-online/artikel/the_elder_scrolls_online,44578,3026853.html