As noted in the description: "A voucher for God of War: Origins Collection which is included inside of the God of War: Ascension Limited Edition Bundle contains a printed expiration date of 3/31/2013. This date has now been extended to 3/31/2014."
I purchased this product in June 2013 and the The code to redeem the God Of War: Chains Of Olympus & God Of War: Ghost Of Sparta which came with this bundle has expired So that "This date has now been extended to 3/31/2014." is false as far as i can tell. So Buy At Your Own risk.