With tomorrow morning’s scheduled server restart – set for 5AM UTC on September 30, 2011 – we will be making changes to the credit prices of tanks in tiers two and three. These changes are being made to help improve the new player experience and to smooth out the progression in early tiers.

Read the full list of changes here: http://game.worldoftanks.com/news/notifications/upcoming-changes-tier-ii-and-iii-tank-credit-costs