[H] Steam Wallet [W] Offers

I have a few keys for the non steam game Of Guards and Thieves, if you are interested. Also have some cards and a leftover copy of Dead Island Epidemic.

$25 gamestop giftcard for $20 steam wallet

I got a promo and wanna know how much $ i can get : http://www.steamtrades.com/trade/azpev/hnvidia-promo-code-w-arma-3