Cheapest prices I've seen yet
Deus Ex: Mankind Divided $14.69
http://www.cdkeys.com/pc/games/deus-ex-mankind-divided-pc-st…
Call of Duty: Infinite Warfare $13.89 (Requires VPN to activate in Australia)
http://www.cdkeys.com/call-of-duty-infinite-warfare-pc-steam
Mafia III $13.04 (Requires VPN to activate in Australia)
http://www.cdkeys.com/pc/games/mafia-iii-3-pc-steam
Facebook code
https://www.facebook.com/cdkeyscom/app/393344207416996
Mafia 3 is region locked to Europe.