GMG currently has a 20% coupon off making it 14.39USD but wait...

But if you are a member of GMG, you should receive a 25% coupon in your email to use not only for FFXIII-2 but also Borderlands: the Pre-sequel and it comes with some DLC the Handsome Jack Pack!

There's also some VIP access deals on their site for members only,

Shadows of Mordor : 35.99 (49.99)

Far Cry 4: 41.99 (59.99)

Far Cry 4 Gold Edition: 64.79 (89.99)

Assassin's Creed Unity: 47.99 (59.99)

Assassin's Creed Unity Gold Edition: 64.79 (89.99)

Lords of the Fallen - Digital Deluxe Edition: 35.99 (49.99)

Sid Mier's Civilization Beyond Earth: 35.99 (49.99)

Football Manager 2015: 38.49 (49.99)

PES 2015 Pro Evolution Soccer: 29.99 (39.90)

Disclaimer: I'm just a member/paying customer on GMG. GMG doesn't pay me to do this.