All came out to $64.25. Honestly, I thought I'd spent more.

I also managed to get a level 1 summer sale badge (with a little help from Avohkah Tamer).

The GET is as follows:

• Skyrim: Dragonborn DLC
  
• Dust: An Elysian Tail
  
• Mars: War Logs
  
• Antichamber
  
• BioShock Infinite
  

Now then, I've got a whole boatload of trading cards to acquire...