Apologies for any mistakes in advance!

Anyway I recently aquired an unpriced unusual so i'm pricing it now.

I bought it for:

Eerie Orbiting Fire Connoisseur's Cap=33 keys

Bubbling Dead Cone =14.5 keys

+5.5 keys of sweets http://backpack.tf/calculator/56ade856b98d884a048d785d

2 keys pure.

Total price: 33+14.5+5.5+2=55

Proof:

https://gyazo.com/7d0d3704840f853327915460037f5fa7

https://gyazo.com/9ca2763e2769bd956c248f158f6a0b6d

https://gyazo.com/c52809768b99dca1aa11ce8b2f5ce69e

May or may not have copied the low value from foamy's comment on the last suggestion. I don't take credit for it, it belongs to foamy!

You seem to have resold the fez for a burning bootleg billycock (~35); not sure though, idk if anything else was involved.

http://backpack.tf/profiles/76561198143871230?time=1448611200&compare=1448784000

Sold for 13th hour fez + sweets.

Proof:

http://imgur.com/gallery/79oyO/new

http://imgur.com/gallery/Ug6C3hX/new

Sold for blizz hwnn (~25) + ~20 in sweets and 2 keys

http://backpack.tf/profiles/76561198072977213?time=1448697600&compare=1448611200

This'd result in a value of ~47. Since the buyer there was reselling for 42, which is where you bought it, its value should be capped at 42 there:

http://www.tf2outpost.com/trade/27510185

The sweets added were roughly 8 keys

http://backpack.tf/profiles/76561198072977213?time=1448697600&compare=1448784000

The correct suggestion's formulation would contain all abovementioned links and proper references:

Sold for duped stormy 13th fez (~42) + ~8 in sweets

0.9*(42+8) = ~45

-> 45 keys.

Hopefully it's enough. :) Constructive criticism below please!