Find it weird that my Searing Sola Topi was more than this and still is.

Sale 1:

Offered on and sold(under 1 week) for: S. F. Force-A-Nature (1.3) + Bubbling Thirst Blood (20.5)

http://www.tf2outpost.com/trade/26933220

http://imgur.com/Bi6cgWZ

Effects: http://imgur.com/fTVUhn9&4lDh867#1

= 22 keys

Sale 2:

Sold(under 1 week) for Miami Fuka(19):

http://backpack.tf/profiles/76561198061217656?time=1441350000

http://backpack.tf/profiles/76561198061217656?time=1441522800

=19 Keys

Mini:

Looks like it sold for 19 Pure:

http://www.tf2outpost.com/trade/27178700

(Compare dates show that person who sold fuka for keys used some of them to unbox stranges, and some others for TODs. The buyer has a 4 day black hole, of which comes out missing 21 keys but gained a Miami Fuka and Damage Dealts part. But with the B/O at 20 and offer at 19, lets just say it was 19.)

Sale 3:

Sold for Stormy Larrikin(13) + Duped Blizz Knot(somewhere along the lines of 8-9):

http://backpack.tf/profiles/76561197993826799?time=1442300400

http://backpack.tf/profiles/76561197993826799?time=1442386800

B/O 20: http://www.tf2outpost.com/trade/26976809

=20 Keys

Sale 4:

NO OUTPOST TRADE

What?

http://backpack.tf/profiles/76561198040425824?time=1445583600 (seller)

http://backpack.tf/profiles/76561198040425824?time=1446451200

http://backpack.tf/profiles/76561198051149088?time=1445497200 (buyer)

http://backpack.tf/profiles/76561198051149088?time=1445583600

By the looks of it, the seller sold it for the Pistol thing(2 Keys) and some keys which he turned into ref to go on a mass crafting spree.

Points towards like 12 - 14 Keys

=Outlier

Sale 5:

Bulk sale

http://backpack.tf/profiles/76561198051149088?time=1446796800

http://backpack.tf/profiles/76561198051149088?time=1446883200

Mango sold the Brigade to a marked scammer, time to send in a report

Sale 6:

Sold (under 3 days)for Pro Aus Tomislav(17) + 4 Keys in sweets:

http://backpack.tf/profiles/76561198061153763?time=1446969600

http://backpack.tf/profiles/76561198061153763?time=1447056000

=21 Keys

Tomislav:

Multiple buyers for 16 on classifieds

Multiple sellers for 17 on classifieds

Taking 17