So this is going to be my first attempt at pricing an unusual that wasn't a all pure sale.

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I Bought it off of seller (Barst the Man) for a Sunbeams Harmburg and 19 keys pure.

Proof of deal:

My BP before: http://backpack.tf/profiles/76561198152878663?time=1444719600

My BP after: http://backpack.tf/profiles/76561198152878663?time=1444806000

Barst's before: http://backpack.tf/profiles/76561198025132482?time=1444633200

Barst's after: http://backpack.tf/profiles/76561198025132482?time=1444806000

Screenshot of completed trade: https://gyazo.com/9012dcff71b4a3aac98f4905acf13db7

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It sold for a duped scorching grimm hatte,5 keys were added to the GC in this trade:

Proof GC was offered: http://www.tf2outpost.com/trade/27087745

Proof of trade: http://imgur.com/rUF6icY

Before: http://backpack.tf/profiles/76561198025132482?time=1443423600

After: http://backpack.tf/profiles/76561198025132482?time=1443510000

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Time to do a mini!

Grimm is outdated at 170

One on OP (It is duped) asking for a PE Beak (outdated at 125)

Proof of trade: http://www.tf2outpost.com/search/256165355

Proof of dupe: http://backpack.tf/item/757336987

PE Beak (none on the market)

Another on OP (clean) declined a C. Heart Heer's Helm + 40 pure keys (helm is unpriced and 1 of 1, but probably not worth more than 90)

Proof of offer: http://www.tf2outpost.com/trade/26958863

Proof of clean: http://backpack.tf/item/1575888517

Another on OP (clean) asking 230 pure (only one with a pure B/O)

Proof of trade: http://www.tf2outpost.com/trade/27134936

Proof of clean: http://backpack.tf/item/2736218589

Since no other duped scorching grimm sales were available I messaged someone else that sold it (polar) and this is what I got: https://gyazo.com/336c40c279ca31b542517c2dc1b87c66

He sold one for 140 pure here: http://www.tf2outpost.com/trade/25970443

And hat one with a B/O of 120, but got more in a bulk trade here: http://www.tf2outpost.com/trade/27112972

Range of 120-140 balances to 130

So the value of the duped scorching grimm is 130

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MATH TIME:

Clean Sunbeams Harmburg 114x.9=102.6 (overpay) 102.6+19= 121.6

Duped Scorching Grimm Hat 130-5=125 (added keys) GC offered on Grimm, so no overpay is needed.

Rounding for roundness 120-125

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Thanks for all the help Foamy and K1ng