Tangentially related to GCU, but directly related to "saving $$$ for the console gamer", you can make a few bucks by trading in your copy of Dying Light to Target this week. They're currently offering double trade-in credit through 2/14 (should be in your local ad). Whoever works in your Target's mobile department does game trade-ins. Dying Light's value has been holding all week at $30 for the PS4 version and $26.94 for XBO. Incredibly, this means the PS4 version is $60 and XBO is $53.88 credit for trade-in. I was able to trade in my PS4 copy today successfully.
Having gotten to take advantage of this after the GCU 20% discount, the $10 preorder trade-in coupon, the $10 rewards certificate, and the opportunity to play through a very good game from start to finish, let's just say this one of the best grouping of deals I've encountered in a while.