Sale 1:

Sold for 22 keys

Seller: http://backpack.tf/profiles/76561198125791160/#!/compare/1456214400/1456300800

Buyer: http://backpack.tf/profiles/76561198058460770/#!/compare/1456041600/1456300800

X = 22

Sale 2:

Sold for 20 keys

No outpost link

Seller: http://backpack.tf/profiles/76561198128012065/#!/compare/1461283200/1461369600

Buyer: http://backpack.tf/profiles/76561198019202110/#!/compare/1460937600/1461456000

X = 20

Sale 3:

Sold for 11 keys + 9 keys in items

http://www.tf2outpost.com/trade/27946138 - B/O of 21

Seller: http://backpack.tf/profiles/76561198102705999/#!/compare/1457683200/1457769600

Buyer: http://backpack.tf/profiles/76561198155108220/#!/compare/1457769600/1457856000

The keys that don’t appear in the seller’s compare link were used to buy the Strange Pro. KS Festive Bat

X + 11 = 9

X = 20

Sale 4:

Sold for Australium Flame Thrower

No outpost link

Seller: http://backpack.tf/profiles/76561198002757046/#!/compare/1458543600/1458630000

Buyer: http://backpack.tf/profiles/76561198030608608/#!/compare/1458457200/1458630000

X = 18

Sale 5:

Sold for 17 keys + junk

http://www.tf2outpost.com/trade/27962253 - B/O of 20

Seller: http://backpack.tf/profiles/76561198058460770/#!/compare/1458284400/1458370800

Buyer: http://backpack.tf/profiles/76561198207739047/#!/compare/1458284400/1458370800

X = 17

Sale 6:

Sold for Hot Blue Mew SMG (Field Tested) + 3 keys

http://www.tf2outpost.com/trade/28076637 - B/O of 21

Seller: http://backpack.tf/profiles/76561198123206870/#!/compare/1460851200/1461110400

Buyer: http://backpack.tf/profiles/76561198119629032/#!/compare/1461024000/1461110400

X = 18 + 3

X = 21

SMG Mini:

Sold for Subatomic Universal Translator

Seller: http://backpack.tf/profiles/76561198090956917/#!/compare/1458950400/1459036800

Buyer: http://backpack.tf/profiles/76561198013640287/#!/compare/1459036800/1459123200

X = 18

Sale 7:

Sold for Steaming Tricorne + Aces Ketche

No outpost link

Seller: http://backpack.tf/profiles/76561198276236424/#!/compare/1459728000/1459814400

Buyer: http://backpack.tf/profiles/76561198074553428/#!/compare/1459728000/1459814400

X = 10.5 + 12.5

X = 23

Sale 8:

Sold for 20 keys?

http://www.tf2outpost.com/trade/27997397 - relisted 5 times, couldn’t find a B/O

Seller: http://backpack.tf/profiles/76561198002186909/#!/compare/1460419200/1460505600

Buyer: http://backpack.tf/profiles/76561198284026674/#!/compare/1460505600/1460764800

X = 20

Sale 9:

Quicksold for 17 keys + 9 ref

http://www.tf2outpost.com/trade/28084358

Seller: http://backpack.tf/profiles/76561198108058866/#!/compare/1460851200/1460937600

Buyer: http://backpack.tf/profiles/76561198128133041/#!/compare/1460851200/1460937600

X = 18

Sale 10:

Sold for Cloud 9 Infernal Impaler

http://www.tf2outpost.com/trade/27808854 - B/O of 21

Seller: http://backpack.tf/profiles/76561198203633531/#!/compare/1454745600/1454832000

Buyer: http://backpack.tf/profiles/76561198117043921/#!/compare/1454659200/1454918400

X = 17

Sale 11:

Sold for Cauldron Bubbles Panama + Collector’s Killstreak Ambassador + Killstreak Festive Rocket Launcher

http://www.tf2outpost.com/trade/27769998 - No B/O

Seller: http://backpack.tf/profiles/76561198203978028/#!/compare/1454486400/1454572800

Buyer: http://backpack.tf/profiles/76561198203633531/#!/compare/1454486400/1454572800

This would most likely reach +25 keys, which would look outlier-ish

Sale 12:

Sold with Team Spirit Bills + 2 ref for Miami Nights German Gonzila

Seller: http://backpack.tf/profiles/76561198202496573/#!/compare/1456992000/1457683200

Buyer: http://backpack.tf/profiles/76561198102705999/#!/compare/1457596800/1457683200

Should be used to update the Gonzila

Sellers:

21 keys:

http://puu.sh/ouG4s/00f39bd8d6.png - 4 days

Offers:

http://www.tf2outpost.com/trade/27930136 – 1 month, declined 21

Sales at:

17

17

18

18

20

20

20

21

22

23

Going with 17-23