Sale 1:

https://backpack.tf/profiles/76561198144820745#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198819805575#!/compare/1585785600/1585872000

Sold for 9 keys

Sale 2:

https://backpack.tf/profiles/76561198259197228#!/compare/1586217600/1586995200

https://backpack.tf/profiles/76561197979248992#!/compare/1586908800/1586995200

Sold for OF Fat Man + 2 keys

use there

Sale 3:

https://backpack.tf/profiles/76561197979248992#!/compare/1586995200/1587168000

https://backpack.tf/profiles/76561198064982470#!/compare/1587081600/1587168000

Bulk

Sale 4:

https://backpack.tf/profiles/76561198067526679#!/compare/1574035200/1580601600

https://backpack.tf/profiles/76561198375290326#!/compare/1580601600/1580688000

Sold with negligible sweets for KaW Hallmark

Hallmark Mini:

https://backpack.tf/suggestion/5e9eb12c903b1e727b693db1

Suggestion for 11 keys

Sale 5:

https://backpack.tf/profiles/76561198375290326#!/compare/1581120000/1581379200

https://backpack.tf/profiles/76561198069493147#!/compare/1581292800/1581379200

Sold with negligible sweets for Aces Jeepcap

use there

Sale 6:

https://backpack.tf/profiles/76561198069493147#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561198206464671#!/compare/1581292800/1581379200

Sold for spell + sweets

Sale 7:

https://backpack.tf/profiles/76561198206464671#!/compare/1581724800/1581811200

https://backpack.tf/profiles/76561198118180637#!/compare/1581811200/1581897600

Sold for ~10 keys

Sale 8:

https://backpack.tf/profiles/76561198118180637#!/compare/1583798400/1585267200

https://backpack.tf/profiles/76561198133002443#!/compare/1583712000/1585785600

Sold with negligible sweets for ~15 keys in sweets

Sale 9 - 12:

https://marketplace.tf/items/tf2/30128;5;u58

$29.99 / $1.72 = 17.44 keys

$14 / $1.72 = 8.14 keys

$22.99 / $1.68 = 13.68 keys

$22.99 / $1.69 = 13.60 keys

Total sales @:

8, 9, 10, 11, 14, 14, 15, 17 keys

buyers up to ~8 keys,

calling 9 low,

15 high,

taking 10 - 14 keys