Sale 1:

https://backpack.tf/profiles/76561198837226736#!/compare/1582761600/1582848000

https://backpack.tf/profiles/76561198124705986#!/compare/1581984000/1583625600

Untrace

sale 2:

https://backpack.tf/profiles/76561198124705986#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198380722433#!/compare/1583625600/1583712000

Sold for PE Puglist + 1 key

use there

sale 3:

https://backpack.tf/profiles/76561198380722433#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561197998339365#!/compare/1583625600/1583712000

Sold for 17 keys

sale 4:

https://backpack.tf/profiles/76561197998339365#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198809414908#!/compare/1583539200/1583712000

Sold for 17 keys + negligible sweets

Sale 5:

https://backpack.tf/profiles/76561198809414908#!/compare/1583539200/1583712000

https://backpack.tf/profiles/76561198131362066#!/compare/1583625600/1583712000

Sold for Miami Dogger + ~6 keys in sweets

Dogger Mini:

https://backpack.tf/suggestion/5eac48eeef0897487729ad40

Suggestion for 15 keys

Total is 21 keys

sale 6:

https://backpack.tf/profiles/76561198131362066#!/compare/1583884800/1583971200

https://backpack.tf/profiles/76561198295486957#!/compare/1583884800/1583971200

QS

sale 7:

https://backpack.tf/profiles/76561198295486957#!/compare/1583971200/1584057600

https://backpack.tf/profiles/76561198093490870#!/compare/1582588800/1585958400

Untrace

sale 8:

https://backpack.tf/profiles/76561198114329180#!/compare/1585180800/1585353600

https://backpack.tf/profiles/76561198127439185#!/compare/1585094400/1585440000

Sold for 19 keys (keys match comeing from same bot)

Sale 9:

https://backpack.tf/profiles/76561198102713495#!/compare/1582329600/1582416000

https://backpack.tf/profiles/76561198363395191#!/compare/1582416000/1582502400

QS

sale 10:

https://backpack.tf/profiles/76561198258595884#!/compare/1583107200/1586563200

https://backpack.tf/profiles/76561198055622215#!/compare/1586476800/1586563200

Bulk

sale 11:

https://marketplace.tf/items/tf2/30003;5;u56

$33.33 / $1.72 = 19.38 keys

$38.99 / $1.68 = 23.21 keys

Total sales @:

17, 17, 19, 19, 21, 23 keys

buyers up to ~16.48 keys,

sellers down to 24 keys,

taking the wide range of 17 - 23 keys.