I hope I did this right this time.

Sale #1:

I offered this on a Haunted Ghosts Buckaroo's Hat:

http://m.imgur.com/dVEya0r

My trade:

http://www.tf2outpost.com/trade/25506740

Proof of effect for the Gatsby:

http://m.imgur.com/IWdkHrT

Proof of effect for the Buckaroo's:

http://m.imgur.com/VDhCdKV

Total: 14.5 keys (No overpay applied as I offered this on the Buckaroo's)

Rounding it to 15 keys

Sale #2:

I offered a Strange Stormy Storm Teutonic Toque for this:

http://www.tf2outpost.com/trade/25408920

My trade:

http://www.tf2outpost.com/trade/25459450

The trade:

http://m.imgur.com/biod13u

The seller added two keys

Proof of effect for the Gatsby:

http://m.imgur.com/ogE1dUi

Proof of effect for the Toque:

http://m.imgur.com/a63y77C

Total: 14 - 2 = 12 keys (No overpay applied as the mini suggestion below was in pure)

Mini Suggestion for the Toque as it is currently outdated:

I bought it for 1 bud (10 keys at that time) and 4 keys:

http://www.tf2outpost.com/trade/25359623

The trade:

http://m.imgur.com/MMaGXVq

Proof of effect for the Toque:

http://m.imgur.com/eWNWUXE

Valuing it at 14 keys