I was about to create this suggestion until the other one popped up...

2 of these exist but can't track down the other one. Could use some help there.

Sale 1: http://www.tf2outpost.com/trade/25496089

Sold for a Prof KS Aussie Rocket Launcher (56)

Buyer's BP:

http://backpack.tf/profiles/76561198088126947?time=1428822000 (April 12th)

http://backpack.tf/profiles/76561198088126947?time=1428994800 (April 14th)

Bonzo Ushanka: http://backpack.tf/item/3174689310

Launcher: http://backpack.tf/item/2504125858

56*0.9 = ~50 keys

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Mini for Prof KS Aussie Launcher:

SCM: 152.16 on April 13 ( http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Rocket%20Launcher )

(152.16/1.15) / 2.35 = ~56 keys

Leave any feedback below.

It's over!