Sale 1:

https://backpack.tf/profiles/76561198070713669#!/compare/1581984000/1582156800

https://backpack.tf/profiles/76561198167207112#!/compare/1582070400/1582416000

Sold for 26 keys

Sale 2:

https://backpack.tf/profiles/76561198969129810#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198363395191#!/compare/1583020800/1583107200

QS

Sale 3:

https://backpack.tf/profiles/76561198161423796#!/compare/1585180800/1586995200

https://backpack.tf/profiles/76561198363395191#!/compare/1585094400/1585180800

Untrace

Sale 4:

https://backpack.tf/profiles/76561198191779491#!/compare/1585872000/1585785600

https://backpack.tf/profiles/76561198156255538#!/compare/1585785600/1585872000

Sold with ~6 keys in sweets for Clair Trans

Trans Mini:

https://backpack.tf/suggestion/5e97b63ca1aac130633e3ced

Suggestion for 29 keys

Total is 23 keys

Sale 5 - 8:

https://marketplace.tf/items/tf2/30067;5;u57

$50 / $1.74 = 28.74 keys <--- https://backpack.tf/item/7957456053

$37.95 / $1.71 = 22.19 keys <--- https://backpack.tf/item/7957456053

$40 / $1.69 = 23.67 keys

$33.06 / $1.69 = 19.56 keys <--- https://backpack.tf/item/7957456053

Total sales @:

20, 22, 23, 24, 26, 29 keys

buyers up to 16 keys,

seller at 30 keys,

calling 29 high due to being farther away from average sales,

taking 20 - 26 keys