Pre-purchase - when is my payment taken?

Boris -

When you buy a yet to be released game from GMG, this is a pre-purchase rather than pre-order. The payment is taken at the time the order is placed with Green Man Gaming. 

Key(s) for your pre-purchased game will be released and sent to you via email and appear in your account closer to the release date of the game.

Please send in a support request if you are still in need of assistance.