http://i.gyazo.com/b56aece4ff2253215eabcbcba357f4df.png

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Sold for Purple Energy Pyro's Beanie (40) + Steaming Waxy Wayfinder (20):

http://www.tf2outpost.com/trade/26424555

http://backpack.tf/profiles/76561198072813390?time=1436252400 (July 7th)

http://backpack.tf/profiles/76561198072813390?time=1436857200 (July 14th)

http://backpack.tf/profiles/76561198072813390?time=1436252400&compare=1436857200

Both hats are outdated, but should be higher than or around the buyout of 40 keys

Quicksold for ~25 keys:

http://www.tf2outpost.com/trade/26348680

http://backpack.tf/profiles/76561198080386637?time=1435906800 (July 3rd)

http://backpack.tf/profiles/76561198080386637?time=1435993200 (July 4th)

http://backpack.tf/profiles/76561198080386637?time=1435906800&compare=1435993200

25 keys

Sold for Stormy Storm Fed-Fightin' Fedora (21) + Stormy Storm Reggaelator (19):

http://backpack.tf/profiles/76561198052367336?time=1434265200 (June 14th)

http://backpack.tf/profiles/76561198052367336?time=1434697200 (June 19th)

http://backpack.tf/profiles/76561198052367336?time=1434265200&compare=1434697200

(21 + 19) * .9 = 36 keys

Stormy Storm Fed-Fightin' Fedora:

Unsold at 21 keys

Sold for Strange Nuts n' Bolts Eliminators Safeguard (~14) + Cloud 9 Pugilist's Protector (~13) + 2 keys:

http://www.tf2outpost.com/trade/26517512

http://backpack.tf/profiles/76561198136629370?time=1437202800 (July 18th)

http://backpack.tf/profiles/76561198136629370?time=1437289200 (July 19th)

http://backpack.tf/profiles/76561198136629370?time=1437202800&compare=1437289200

(14 + 13) * .9 + 2 = 26.3 keys

~26 keys

Bulk sale for Blizzardy Storm Team Captain:

http://backpack.tf/profiles/76561198087980734?time=1437030000 (July 16th)

http://backpack.tf/profiles/76561198087980734?time=1437116400 (July 17th)

http://backpack.tf/profiles/76561198087980734?time=1437030000&compare=1437116400

Bulk sale for Purple Energy Modest Pile of Hat:

http://backpack.tf/profiles/76561198087980734?time=1436943600 (July 15th)

http://backpack.tf/profiles/76561198087980734?time=1437030000 (July 16th)

http://backpack.tf/profiles/76561198087980734?time=1436943600&compare=1437030000

Sold with 9 keys for Steaming Killer Exclusive (40):

http://www.tf2outpost.com/trade/26300857

http://backpack.tf/profiles/76561198044393092?time=1435820400 (July 2nd)

http://backpack.tf/profiles/76561198044393092?time=1436511600 (July 10th)

http://backpack.tf/profiles/76561198072395978?time=1435647600&compare=1435993200

40 - 9 = 31 keys

Owner offered.

Sold for 55 keys:

http://www.tf2outpost.com/trade/26180286

http://backpack.tf/profiles/76561197961279983?time=1434697200 (June 19th)

http://backpack.tf/profiles/76561197961279983?time=1434783600 (June 20th)

http://backpack.tf/profiles/76561197961279983?time=1434783600&compare=1434697200

55 keys

Sold for 35 keys:

http://www.tf2outpost.com/trade/26193249

http://backpack.tf/profiles/76561198031350787?time=1434438000 (June 16th)

http://backpack.tf/profiles/76561198031350787?time=1434610800 (June 18th)

http://backpack.tf/profiles/76561198031350787?time=1434610800&compare=1434438000

35 keys

Sold for Dead Presidents Buckaroos Hat (15) + Strange Australium Wrench (24):

http://www.tf2outpost.com/trade/26121139

http://backpack.tf/profiles/76561198090956917?time=1434178800 (June 13th)

http://backpack.tf/profiles/76561198090956917?time=1434265200 (June 14th)

http://backpack.tf/profiles/76561198090956917?time=1434265200&compare=1434178800

15 * .9 + 24 * .95 = 36.3 keys

Buyout of 30 keys

Sold with 5 keys for Searing Plasma A Rather Festive Tree (40):

http://backpack.tf/profiles/76561197997407342?time=1435561200 (June 29th)

http://backpack.tf/profiles/76561197997407342?time=1435734000 (July 1st)

http://backpack.tf/profiles/76561197997407342?time=1435561200&compare=1435734000

40 * .9 - 5 = 31 keys

Sold for Disco Beat Down Bloke's Bucket Hat (17) + Terror-Watt Old Guadalajara (24) + 5 keys:

http://www.tf2outpost.com/trade/26202968

http://backpack.tf/profiles/76561198132684118?time=1434610800 (June 18th)

http://backpack.tf/profiles/76561198132684118?time=1434697200 (June 19th)

http://backpack.tf/profiles/76561198132684118?time=1434610800&compare=1434697200

(17 + 24) * .9 + 5 = 41.9 keys

~42 keys

Sales at 25, 26, 30, 31, 31, 35, 36, 40, 42 and 55 keys

Going with 30 - 40 keys