Realized if I do 12 - 15, I have 5 low and 5 high Outliers.

http://backpack.tf/item/5205017268

Sale 1) Sold for a Strange Nuts and Bolts Towering Pillar of Hats

http://backpack.tf/profiles/76561198101610113#!/compare/1490659200/1490745600

High Outlier.

Sale 2) Sold for ~11 Keys of Items

http://backpack.tf/profiles/76561198340633910#!/compare/1490918400/1491004800

Countered by the Buyer.

http://backpack.tf/item/5205885274

Sale 3) Sold for a Blizzardy Scotch (12.5 Keys) + ~3 Keys of Items + 3 Keys

http://backpack.tf/profiles/76561198309671404#!/compare/1490313600/1490400000

High Outlier.

Scotch Mini

http://backpack.tf/suggestion/591b7fca0e2cad0a4514258a - 12.5 Keys

Sale 4) Sold for 12 Keys

http://backpack.tf/profiles/76561198149459336#!/compare/1490486400/1490572800

http://backpack.tf/item/5226711015

Sale 5) Sold for 12 Keys

http://backpack.tf/profiles/76561198065156103#!/compare/1491004800/1491177600

http://backpack.tf/item/5244944356

Sale 6) Sold for 13 Keys

http://backpack.tf/profiles/76561198158876366#!/compare/1490659200/1490832000

http://backpack.tf/item/5249836696

Sale 7) Sold for 11 Keys

http://backpack.tf/profiles/76561198051452078#!/compare/1492992000/1493078400

Countered by the Buyer.

http://backpack.tf/item/5251144780

Sale 8) Sold for an Electrostatic Coupe D’isaster (14 Keys)

http://backpack.tf/profiles/76561198123375233#!/compare/1492473600/1492560000

Sale 9) Sold + ~10 Keys of Items for a Terror-Watt Medic’s Mountain Cap (23 Keys)

http://backpack.tf/profiles/76561198143512004#!/compare/1493337600/1493424000

23 - 10 = 13 Keys

Sale 10) Sold for a Smoking Backbiter’s Billycock (15 Keys)

http://backpack.tf/profiles/76561198173027559#!/compare/1493337600/1493424000

http://backpack.tf/item/5254912384

Sale 11) Sold for ~10 Keys of Items

http://backpack.tf/profiles/76561198205723668#!/compare/1493769600/1494028800 - Seller’s Backpack

http://backpack.tf/profiles/76561198323431912#!/compare/1493942400/1494028800 - Buyer’s Backpack

Low Outlier.

Sale 12) Sold for 14 Keys

http://backpack.tf/profiles/76561198323431912#!/compare/1494028800/1494115200

http://backpack.tf/item/5256076056

Sale 13) Sold for 11 Keys + ~1 Key of Refined

http://backpack.tf/profiles/76561198070880686#!/compare/1491609600/1491696000

11 + 1 = 12 Keys

Sale 14) Sold for 11 Keys

http://backpack.tf/profiles/76561198140988055#!/compare/1492473600/1492560000

Countered by the Buyer.

http://backpack.tf/item/5257358849

Sale 15) Sold for 11 Keys

http://backpack.tf/profiles/76561198341700517#!/compare/1490572800/1490659200

Countered by the Buyer.

Sale 16) Sold for a Duped Stormy Storm Buckaroos + Head Prize (3.15 Keys)

http://backpack.tf/profiles/76561197961309499#!/compare/1490572800/1490659200

High Outlier.

Sale 17) Sold for a Miami Nights Frenchman’s Beret (22.5 Keys)

http://backpack.tf/profiles/76561198234377776#!/compare/1491350400/1491436800

High Outlier

Sale 18) Sold for 11 Keys + ~1 Key of Refined

http://backpack.tf/profiles/76561198067646022#!/compare/1491609600/1491955200

11 + 1 = 12 Keys

http://backpack.tf/item/5265174167

Sale 19) Sold for ~25 Keys of Items

http://backpack.tf/profiles/76561198021055079#!/compare/1492214400/1492300800

High Outlier.

http://imgur.com/a/AuH5W - 2 Month Buyer at 11 Keys