Aces High Horrific Headsplitter

Suggestion would not be possible without Scourge's help. Thanks.
[b]Aces High Horrific Headsplitter[/b]

[b]Sale 1[/b]
https://backpack.tf/profiles/76561198337734785#!/compare/1586649600/1586736000
https://backpack.tf/profiles/76561198090343728#!/compare/1579478400/1586736000
https://bot.tf/stats/listings/Y3WG1V66
Sold for 8 keys 53 ref ~ 9 keys

[b]Sale 2[/b]
https://backpack.tf/profiles/76561198090343728#!/compare/1587081600/1587340800
https://backpack.tf/profiles/76561198404492203#!/compare/1583539200/1588896000
No trace

[b]Sale 3[/b]
https://backpack.tf/profiles/76561198404492203#!/compare/1589414400/1589587200
https://backpack.tf/profiles/76561198879945899#!/compare/1589328000/1589414400
https://bot.tf/stats/listings/YD171DD5
Sold to buy orders ~ 8.5 keys

[b]Sale 4[/b]
https://backpack.tf/profiles/76561198113759677#!/compare/1583798400/1584057600
https://backpack.tf/profiles/76561198199727085#!/compare/1583712000/1584057600
No tracer

[b]Sale 5[/b]
https://backpack.tf/profiles/76561198199727085#!/compare/1585008000/1585094400
https://backpack.tf/profiles/76561198135140709#!/compare/1584921600/1585094400
Still no tracer

[b]Sale 6[/b]
https://backpack.tf/profiles/76561198135140709#!/compare/1585094400/1585180800
https://backpack.tf/profiles/76561198012537041#!/compare/1585094400/1585180800
[/b]
No trace

[b]Sale 7[/b]
https://backpack.tf/profiles/76561198064914564#!/compare/1585699200/1586476800
https://backpack.tf/profiles/76561198031743044#!/compare/1585612800/1585872000
Most probably sold in bulk

[b]Sale 8[/b]
https://backpack.tf/profiles/76561198151610148#!/compare/1590451200/1590537600
https://backpack.tf/profiles/76561198817226790#!/compare/1590364800/1590537600
Untrace

[b]Marketplace sale: https://marketplace.tf/items/tf2/291;5;u59[/b]
1. $19.95 / $1.71 = 11.67 keys on 3/2/2020 ~ 12 keys
2. $19.5 / $1.72 = 11.34 keys on 3/13/2020 ~ 11 keys
3. $20 / $1.69 = 11.83 keys on 3/28/2020 ~ 12 keys
4. $18.08 / $1.78 = 10.16 keys on 4/16/2020 ~ 10 keys
5. $17.44 / $1.75 = 9.97 keys on 4/22/2020 ~ 10 keys
6. $19.99 / $1.81 = 11.04 keys on 4/26/2020 ~ 11 keys
7. $19.95 / $1.85 = 10.78 keys on 5/1/2020 ~ 11 keys
8. $19.95 / $1.88 = 10.61 keys on 5/5/2020 ~ 11 keys
9. $21.11 / $1.89 = 11.17 keys on 5/17/2020 ~ 11 keys

[b]Conclusion:[/b]
Excluding buy order sales , sales are 9, 12, 11, 12, 10, 10, 11, 11, 11, 11. Current buy orders are above 9. Taking 10 - 12 keys.