Proof below. Overpay calculated. Original prices used

Sales

http://www.tf2outpost.com/trade/19292956

http://backpack.tf/profiles/76561198118976518?time=1397890800 ---> http://backpack.tf/profiles/76561198118976518?time=1397977200

Added ~7 keys for a Ghosts Drill = 2.7 buds (No overpay since offered on)

http://www.tf2outpost.com/trade/18657300

http://backpack.tf/profiles/76561198065201997?time=1396594800 ---> http://backpack.tf/profiles/76561198065201997?time=1396681200

TF Logo Tossle + SF Spec. KS 'Nade (With parts worth ~2.6 keys) (~12 keys?) + SF Spec. KS Eyelander (~4 keys?) = 3.4 buds

http://backpack.tf/profiles/76561198075754559?time=1396594800 ---> http://backpack.tf/profiles/76561198075754559?time=1396681200

http://backpack.tf/profiles/76561198086976965?time=1394866800 ---> http://backpack.tf/profiles/76561198086976965?time=1394953200

Aces Conquistador + ~16 keys in items = 2.6 buds

http://backpack.tf/profiles/76561198078915295?time=1399100400 ---> http://backpack.tf/profiles/76561198078915295?time=1399186800

Scorching Bloke's + S. Rocket worth ~3 keys = 2.7 buds

http://www.tf2outpost.com/trade/18473955 - Added 35 keys for a Burning Shako = 2.7 buds (No overpay since offered on)

http://www.tf2outpost.com/trade/18576922

http://backpack.tf/profiles/76561198086976965?time=1394694000 ---> http://backpack.tf/profiles/76561198086976965?time=1394866800

1 bud + 11 keys + ~1.3 buds in items = 2.9 buds (No overpay since offered on)

Help / Constructive Criticism / Additional Proof / Counter-Proof is ALWAYS welcome! >;3