Do you know if the codes are still available? And can you buy the game from the PSN store, and receive the code? I'm away from the ps3 for most of my day:/
No. The Journey Collector's Edition is only available on disc. It is currently $30 on Amazon, but you can probably find it cheaper at Walmart or Target. You could buy it used, but the likelihood that the codes would still work would be extremely low.
For what its worth, the Journey CE comes with Journey, FlOw and Flower. All quality games from thatgamecompany. It comes with codes for Journey and Flower premium avatars and a separate code for a free month of PS+ (which if you are already a member, you can redeem for an extra month on top of your current subscription).