Sale 1:

https://backpack.tf/profiles/76561198053911511#!/compare/1583280000/1583366400

https://backpack.tf/profiles/76561198013127982#!/compare/1583280000/1583366400

Transfer

sale 2:

https://backpack.tf/profiles/76561198013127982#!/compare/1583366400/1583452800

https://backpack.tf/profiles/76561198069414668#!/compare/1583280000/1583366400

Sold for ~18 keys

Sale 3:

https://backpack.tf/profiles/76561198069414668#!/compare/1584662400/1584835200

https://backpack.tf/profiles/76561198196410274#!/compare/1584748800/1584835200

sold for 19 keys

sale 4:

https://backpack.tf/profiles/76561198196410274#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198135010259#!/compare/1584748800/1584835200

sold for C9 Salty(28.5) + 2 keys

Total is 30.5 keys

sale 5:

https://backpack.tf/profiles/76561198135010259#!/compare/1584835200/1584921600

https://backpack.tf/profiles/76561198254861074#!/compare/1584748800/1585008000

sold for Snowblind Yule + 4 keys

Yule Mini:

https://backpack.tf/suggestion/5eaccae35b22d3548c44f198

Suggestion for 20.5 keys

Total is ~25 keys

sale 6:

https://backpack.tf/profiles/76561198254861074#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198408017461#!/compare/1584835200/1585094400

Sold for Bubbling Mohawk

use there

Sale 7:

https://backpack.tf/profiles/76561198408017461#!/compare/1584835200/1585094400

https://backpack.tf/profiles/76561198146826335#!/compare/1585008000/1585094400

sold for P Fetti Coldsnap + ~5 keys in sweets

use there

sale 8:

https://backpack.tf/profiles/76561198146826335#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198163879419#!/compare/1585094400/1585699200

Sold for ~20 keys

Sale 9:

https://marketplace.tf/items/tf2/30001;5;u68

$49.99 / $1.69 = 29.58 keys

Total sales @:

18, 19, 20, 25, 30, 31 keys

buyers up to ~18 keys,

https://i.imgur.com/fzC1aI9.jpg

taking 20 - 30 keys