In August I bought a new PC from Playtech and it came with $100 worth of in game credit but when I checked the vouchers they had an expiry date of 30/4/13 so I asked what the deal was on Playtech's FB page and they assured me that wargaming.net had extended the codes life. However that was in August.

So comment if you'd like to try one, first in, first served remember I only have two. If they work great, if not I apologise for trying to give you free stuff. :p