30 in existence. 1 on market

Seller

http://www.tf2outpost.com/search/247233234 B/O 60 keys

Sale #1

http://backpack.tf/profiles/76561198126546221?time=1428217200 -> http://backpack.tf/profiles/76561198126546221?time=1428303600

Sold for 39 keys pure in the range

Sale #2

http://backpack.tf/profiles/76561198126546221?time=1429167600 -> http://backpack.tf/profiles/76561198126546221?time=1429254000

Sold for Vivid Whoopee (outdated) + Doublecross-Comm + EA -> (25.5 + 2.3)*0.9 = 25 keys outlier

Mini on the Whoopee ~ 25.5 keys :

http://www.tf2outpost.com/trade/25478311

Sold for Vivid Gengarry 24 keys (no double overpay)

http://www.tf2outpost.com/trade/25972868 27 keys isn't a QS !

Sale #3

http://backpack.tf/profiles/76561198108525949?time=1430982000 -> http://backpack.tf/profiles/76561198108525949?time=1431068400

Sold for lvl 1 Max + DP Tyrantium + 11 keys + sweets (Uncraftable Pyromancer + Merc's Muffler + G. Cowl)

The history of the keys aren't matching but matches there (Strontium Pipe sold for pure before pure got traded for the Fro)

http://backpack.tf/profiles/76561198120385184?time=1430982000 -> http://backpack.tf/profiles/76561198120385184?time=1431068400

x = (26 + 17.5 + 1)*0.9 + 11 = 51 keys outlier

Mini on the Tyrantium :

Can't trace the 3 last sales on the history (occured the same day)

Sale #4

http://www.tf2outpost.com/trade/25713295

Sold for clean NnB KE + 8 keys -> x = 36.5*0.9 + 8 = 41 keys high-end

Sale #5

http://www.tf2outpost.com/trade/25286178

Sold for 7 buds pure (currency was very unstable at the time, sale could be 35-56 keys) -> invalid

Sale #6

http://www.tf2outpost.com/trade/25580505

Sold for duped G. Fetti Stash + 3 keys of sweets -> x = (37.5 + 3)*0.9 = 36 keys low-end

Mini on the duped stash ~ 37.5 keys :

http://www.tf2outpost.com/trade/25698709

Sold for duped Searing Honcho + 14 keys -> 55.5 keys (no double overpay) outlier

http://www.tf2outpost.com/trade/25750904

31 keys pure

http://www.tf2outpost.com/trade/25817956

Sold with a bud http://backpack.tf/item/174796223 for Searing Tyrant -> 35 keys

http://backpack.tf/profiles/76561198040447558?time=1430463600 -> http://backpack.tf/profiles/76561198040447558?time=1430550000

Sold for Searing Crown -> 46.5 keys (no double overpay)

Sale #7

http://backpack.tf/profiles/76561198067631477?time=1429081200 -> http://backpack.tf/profiles/76561198067631477?time=1429167600

Sold for C9 Towering Pillar (outdated) -> 30*0.9 = 27 keys outlier

Mini on the C9 Pillar ~ 30 keys :

http://www.tf2outpost.com/trade/25972441 Unsold at 30 keys (relist of http://www.tf2outpost.com/trade/25864979 )

Conclusion : (25) , (27) , 36 , 39 , 41 , (51). 25 & 27 are outliers cuz sellers trusted the outdated values of the hats. Excluding 51 from the range too

Any pertinent comments are welcome.