[H] XCOM Enemy Unknown + More [W] 3 TF2 Keys

This is an Amazon.com key which includes:

• XCOM: Enemy Unknown
• XCOM: Enemy Unknown: Slingshot Pack
• XCOM: Enemy Unknown: Elite Soldier Pack
• X-COM: Apocalypse
• X-COM: Enforcer
• X-COM: Interceptor
• X-COM: Terror from the Deep
• X-COM: UFO Defense

All these games are under a single key, so I cannot give them out individually. I am looking to trade for 4 TF2 keys.