Quality hat.

Sold for a Pro KS Big Kill(8 Keys with Overpay) and ~6 Keys in Sweets(14 Keys total)

http://backpack.tf/profiles/76561198174206221?time=1440831600

http://backpack.tf/profiles/76561198174206221?time=1441090800

Sold for 14 Keys

http://backpack.tf/profiles/76561198162571609?time=1441695600

http://backpack.tf/profiles/76561198162571609?time=1442127600

Sold for an Orbiting Planets Hetman's Headpiece(9 Keys with Overpay) and ~3 Keys in Sweets(12 Keys total)

http://backpack.tf/profiles/76561198072098497?time=1441609200

http://backpack.tf/profiles/76561198072098497?time=1441695600

http://backpack.tf/profiles/76561198071670444?time=1441522800

http://backpack.tf/profiles/76561198071670444?time=1441695600

Sold for an Australium Black Box(16 Keys with Overpay)

http://backpack.tf/profiles/76561198071670444?time=1441782000

http://backpack.tf/profiles/76561198071670444?time=1442300400

Pro KS Big Kill mini suggestion

All recent sales on the SCM(Keys = $2.49): http://steamcommunity.com/market/listings/440/Professional%20Killstreak%20Big%20Kill

$28.47

$23.89

$20.71

$23.07

$26.74

$24.36

$24.15

$25.30

$25.00

$25.00

$25.00

$21.01

$22.77

$22.46

$21.78

$21.85

$22.77

$22.82

$21.10

$22.90

$22.91

$23.81

$19.18

$25.39

$22.82

$22.62

$22.31

$20.00

$24.67

$24.67

$22.02

$22.23

$21.85

The average comes out at $23.20(Roughly 9 Keys)

Sales seem to fit, 12-16 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.