Found this on www.shacknews.com
Steam is having a sale for team fortress 2 for only $2.49 until 2PM EDT, not sure what that time is in GMT+10! quick and get a copy. This pack includes the latest updates (halloween updates). So hurry up and purchase it!
Sale was over before you posted this. Your link even says this: "Update 2: The sale has come to a close. We'll let you know when the new content goes live."