Need some help here maybe i missed 1 - 2 things...

http://www.tf2outpost.com/trade/16214658 - Sold for Duped Marauder ghosts + Marauder Stormy Storm (Not sure for how much goes one duped and the price is outdated 7 months but have one guy "quickselling" for 45 keys one duped so i'm gonna use this) 2.3 + 1.8 = 4.1~

http://backpack.tf/profiles/76561198041493854?time=1387180800 - His backpack after the trade.

http://www.tf2outpost.com/trade/16824831 - B/O 5 Buds but i'm not sure of this one the hat isn't in his backpack and in the history don't appear...

Feel free to counter if you can find proof and any advise is appreciated.