Blade & Soul Japan open beta kicked off today on May 20, 2014. NCsoft has announced that the payment model for Blade & Soul Japan is monthly subscription. There are two kinds of subscription modes including 30 days (monthly) and 90 days (quarterly) subscription.
Monthly subscription will cost you 3000 Japanese Yen (about 29.4 USD) per month and quarterly subscription will cost you 9000 Japanese Yen (about 88 USD) every three months. Quarterly subscription players will receive extra game items as rewards like double EXP potions.