50 keys

lol

Sold for 30 Keys

http://backpack.tf/profiles/76561198124862814?time=1441436400 (September 5th)

http://backpack.tf/profiles/76561198124862814?time=1441522800 (September 6th)

Sold for an Australium Pro KS Stickybomb Launcher(22 Keys with Overpay)

http://backpack.tf/profiles/76561198153304866?time=1439276400 (August 11th)

http://backpack.tf/profiles/76561198153304866?time=1439708400 (August 16th)

http://www.tf2outpost.com/item/440,4026190310,459,5 Cosa History

Sold for a Cloud 9 Sergeant's Drill Hat(20 Keys with Overpay)

http://backpack.tf/profiles/76561198091133480?time=1439190000 (August 10th)

http://backpack.tf/profiles/76561198091133480?time=1439276400 (August 11th)

http://www.tf2outpost.com/item/440,4026190310,459,5 Cosa History

Australium Pro KS Stickybomb Launcher mini suggestion

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

$63.36

$62.10

$58.91

$58.91

$50.60

$62.99

$64.03

$65.01

$66.33

$64.01

The average comes out at $61.62(Roughly 24.5 Keys)

Sales seem to fit, 20-30 Keys should be fine.

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