When buying through Paymaster the commission is 0%!
After purchase, you get a Steam Activation Key without regional restrictions
About this game:

Batman: Arkham Origins Blackgate - Deluxe Edition amplifies the 2.5-D game with new maps, enemy encounters, difficulty levels, batsuits, and enhanced visuals. A companion game to Batman: Arkham Origins, players can continue the storyline of the console version and discover more details of the Dark Knight’s past. Featuring stealth gameplay, free-flow combat, and Batman’s famed arsenal of gadgets, the genuine Arkham experience is reproduced in a deep, action packed side-scrolling adventure.

RANDOM STEAM GAME AND GIFT CERTIFICATE FOR POSITIVE FEEDBACK!
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After activation, the game will forever remain in your steam library!

Game activation instructions:

1. If you have not installed Steam yet, then download and run the installer: http://steampowered.com/download/SteamInstall.msi
2. Create a new Steam account if you are not already registered there.
3. Log in using your Steam account through the Internet browser: https://store.steampowered.com/login/
4. Go to the "My Games" section and select "Activate via Steam ...", read and accept the Steam subscriber’s agreement and enter the key received immediately after payment.
5. After that, the game will appear in the "Library" section, and you can download it from steam.

In case of any problems or questions regarding the purchase or activation of the game, immediately contact me through the "Ask a Question" form.