Taking last 2 months, avoiding before the Crate Depression sales.

Sale 1:

https://backpack.tf/profiles/76561198052881351#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198276288498#!/compare/1565481600/1566086400

https://backpack.tf/profiles/76561198098501872#!/compare/1566432000/1566518400

SCM

Sale 2:

https://backpack.tf/profiles/76561198375138934#!/compare/1565913600/1566172800

https://backpack.tf/profiles/76561198128953533#!/compare/1567468800/1567555200

Untrace

Sale 3:

https://backpack.tf/profiles/76561198214461775#!/compare/1568160000/1568419200

https://backpack.tf/profiles/76561198859721638#!/compare/1568332800/1568419200

Bulk

sale 4:

https://backpack.tf/profiles/76561198859721638#!/compare/1568592000/1568678400

https://backpack.tf/profiles/76561198119550005#!/compare/1568505600/1568764800

Sold for Tesla Conq + Cyclone Pipes

Conq Mini:

https://backpack.tf/suggestion/5d8847d1d3817271110953de

Suggestion for 14 keys

Pipes Mini:

https://backpack.tf/suggestion/5d866003d381724e493fb161

Suggestion for ~3.25 keys

Total is ~17 keys

Sale 5:

https://backpack.tf/profiles/76561197993987295#!/compare/1564617600/1564704000

https://backpack.tf/profiles/76561198062611321#!/compare/1564617600/1564704000

Bulk

Sale 6:

https://backpack.tf/profiles/76561198062611321#!/compare/1565481600/1565568000

https://backpack.tf/profiles/76561198031126990#!/compare/1565481600/1565568000

Bulk

sale 7:

https://backpack.tf/profiles/76561198031126990#!/compare/1567555200/1567641600

https://backpack.tf/profiles/76561197993708178#!/compare/1567296000/1567641600

Bulk

sale 8:

https://backpack.tf/profiles/76561198122894683#!/compare/1567296000/1567468800

https://backpack.tf/profiles/76561197964171516#!/compare/1567209600/1567296000

Sold for GE Handle

Handle Mini:

https://backpack.tf/suggestion/5d852ed9678072206928c237

Suggestion for 19.5 keys

Sale 9:

https://backpack.tf/profiles/76561198412560529#!/compare/1565740800/1565913600

https://backpack.tf/profiles/76561198337734785#!/compare/1565827200/1565913600

QS

sale 10:

https://backpack.tf/profiles/76561198082232097#!/compare/1567036800/1567209600

https://backpack.tf/profiles/76561198029605378#!/compare/1566864000/1567123200

Can trace a eyelander....

Sale 11:

https://backpack.tf/profiles/76561198107137997#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198012537041#!/compare/1567555200/1567814400

https://backpack.tf/profiles/76561198074718149#!/compare/1566864000/1567814400

https://backpack.tf/profiles/76561198089253101#!/compare/1567814400/1567900800

Gambling?

Sale 12:

https://backpack.tf/profiles/76561198089253101#!/compare/1567900800/1567987200

https://backpack.tf/profiles/76561198074718149#!/compare/1567900800/1567987200

https://backpack.tf/profiles/76561198973894950#!/compare/1567987200/1568073600

https://backpack.tf/profiles/76561198089253101#!/compare/1567987200/1568073600

Gambling

sale 13:

https://marketplace.tf/items/tf2/30175;5;u56

https://manic.tf/keyprice/?at=2019-09-13&price=49.22z

$49.22 / $1.82 = 27.04 keys

Sale 14:

https://backpack.tf/profiles/76561198071362011#!/compare/1568678400/1568937600

https://backpack.tf/profiles/76561198197316466#!/compare/1568851200/1568937600

Untrace

Sale 15:

https://backpack.tf/profiles/76561198197316466#!/compare/1569110400/1569196800

https://backpack.tf/profiles/76561198332600207#!/compare/1568937600/1569196800

Sold for ~25 keys in sweets

Total sales @:

17, 19.5, 25, 27.04 keys

sellers down to ~24 keys,

buyers up to ~15 keys,

calling 17 low,

taking 20 - 27 keys, converses close to seller.

https://i.imgur.com/MnXC2jk.png