Sale 1:

https://backpack.tf/profiles/76561198311404200#!/compare/1502841600/1566345600

https://backpack.tf/profiles/76561198100836666#!/compare/1566259200/1566345600

Sold for 27 keys

Sale 2:

https://backpack.tf/profiles/76561198100836666#!/compare/1566345600/1566432000

https://backpack.tf/profiles/76561198202226652#!/compare/1566345600/1566432000

Sold with 5 keys for Aussie Medigun(~46.5)

Total is 41.5 keys

Sale 3:

https://backpack.tf/profiles/76561198086428086#!/compare/1564099200/1568073600

https://backpack.tf/profiles/76561198125791160#!/compare/1566777600/1566864000

Untrace

Sale 4:

https://backpack.tf/profiles/76561198799922000#!/compare/1563494400/1564099200

https://backpack.tf/profiles/76561198337734785#!/compare/1564012800/1564099200

QS

Sale 5:

https://backpack.tf/profiles/76561198337734785#!/compare/1565222400/1565308800

https://backpack.tf/profiles/76561198867208675#!/compare/1564876800/1565308800

Sold for 38 keys

Sale 6:

https://backpack.tf/profiles/76561198867208675#!/compare/1565568000/1565654400

https://backpack.tf/profiles/76561198060813904#!/compare/1565136000/1565568000

Sold for Ghastly Defiant

use there

Sale 7:

https://backpack.tf/profiles/76561198023034908#!/compare/1562198400/1562284800

https://backpack.tf/profiles/76561198042823991#!/compare/1562112000/1562284800

Can trace 1 key...

Sale 8:

https://backpack.tf/profiles/76561198042823991#!/compare/1563148800/1563408000

https://backpack.tf/profiles/76561198286234945#!/compare/1563321600/1563408000

Sold for Burning Birdcage + 9 keys

use there

Sale 9:

https://backpack.tf/profiles/76561198286234945#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198838118682#!/compare/1563580800/1566086400

Transfer

Sale 10:

https://backpack.tf/profiles/76561198838118682#!/compare/1563753600/1563840000

https://backpack.tf/profiles/76561198051253246#!/compare/1563753600/1563840000

Sold for Mallard Tree + ~1 key in sweets (Note that ID matches three keys not part of trade...)

use there

Sale 11:

https://backpack.tf/profiles/76561198051253246#!/compare/1563840000/1563926400

https://backpack.tf/profiles/76561198203329164#!/compare/1563840000/1563926400

Sold for Duped Cauldron Chapeau

Chapeau Mini:

https://backpack.tf/profiles/76561198051253246#!/compare/1564012800/1564099200

https://backpack.tf/profiles/76561198043991016#!/compare/1563926400/1564099200

Sold for 46 keys

https://backpack.tf/profiles/76561198156255538#!/compare/1562716800/1562803200

https://backpack.tf/profiles/76561198038076640#!/compare/1562544000/1562803200

Bulk

taking 46

Sale 12:

https://backpack.tf/profiles/76561198203329164#!/compare/1563840000/1563926400

https://backpack.tf/profiles/76561198095328347#!/compare/1560902400/1563926400

Sold for Orb Pithy(40)

Sale 13:

https://backpack.tf/profiles/76561198095328347#!/compare/1560902400/1563926400

https://backpack.tf/profiles/76561198194358278#!/compare/1563840000/1563926400

Can trace a taunt

Sale 14:

https://backpack.tf/profiles/76561198194358278#!/compare/1564012800/1564099200

https://backpack.tf/profiles/76561198337734785#!/compare/1564012800/1564099200

QS

Sale 15:

https://backpack.tf/profiles/76561198912188810#!/compare/1561161600/1561593600

https://backpack.tf/profiles/76561198337734785#!/compare/1561075200/1561161600

QS

Sale 16:

https://backpack.tf/profiles/76561198337734785#!/compare/1561420800/1561507200

https://backpack.tf/profiles/76561198310944756#!/compare/1561420800/1561507200

Sold for PE Tipped(76.5)

Sale 17:

https://backpack.tf/profiles/76561198310944756#!/compare/1562284800/1562371200

https://backpack.tf/profiles/76561198054342002#!/compare/1562284800/1562371200

Sold with Miami Caribou for Eldritch Pullover

use there

Sale 18:

https://backpack.tf/profiles/76561198054342002#!/compare/1562630400/1562716800

https://backpack.tf/profiles/76561198059703923#!/compare/1562630400/1562716800

Sold for Searing Gibus

Gibus Mini:

https://backpack.tf/suggestion/5d8437fdd381721518158924

Suggestion for 49 keys

Sale 19:

https://backpack.tf/profiles/76561198059703923#!/compare/1562630400/1562716800

https://backpack.tf/profiles/76561198286257338#!/compare/1562630400/1562716800

Sold with 72 Skullcracker + 17 keys for Eldritch Pullover

use there seems to need more sales to provide a better range.

Sale 20:

https://backpack.tf/profiles/76561198286257338#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198131479738#!/compare/1563235200/1563321600

Sold for Insomnia Law

use there

Sale 21:

https://backpack.tf/profiles/76561198131479738#!/compare/1563753600/1564099200

https://backpack.tf/profiles/76561198337583821#!/compare/1563840000/1564012800

Sold for Scorching Berliner

Berliner Mini:

https://backpack.tf/suggestion/5d89723967807255c552fb05

Suggestion for 42.5 keys

Sale 22, 23:

https://marketplace.tf/items/tf2/30549;5;u58

$29.99 / $1.84 = 16.30 keys

$75 / $1.80 = 41.67 keys

Sale 24:

https://backpack.tf/profiles/76561198061440669#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198045838834#!/compare/1568678400/1568851200

Sold for 37 keys

Total sales @:

16

27

37

38

40

42 (x2)

43

46

49

76.5

Month unsold for 48 keys,

poorly bumped newish seller for 38 keys,

aging seller for 38 keys,

gonna take 37 - 46 keys