Sale 1:

https://backpack.tf/profiles/76561198060067117#!/compare/1580083200/1580342400

https://backpack.tf/profiles/76561198841279602#!/compare/1580083200/1580169600

QS

sale 2:

https://backpack.tf/profiles/76561198841279602#!/compare/1580169600/1580256000

https://backpack.tf/profiles/76561198354459626#!/compare/1580083200/1580169600

Can trace 6 keys

sale 3:

https://backpack.tf/profiles/76561198118359997#!/compare/1585958400/1586044800

https://backpack.tf/profiles/76561198981536505#!/compare/1585785600/1586044800

Sold with negligible sweets for TW Toque

Toque Mini:

https://backpack.tf/suggestion/5ea4df711ce81a6bad433726

suggestion for 11.5 keys

Total is ~11 keys

sale 4:

https://backpack.tf/profiles/76561198418740133#!/compare/1581465600/1581638400

https://backpack.tf/profiles/76561198158738894#!/compare/1580428800/1581897600

Sold for 9 keys

Sale 5:

https://backpack.tf/profiles/76561198273261690#!/compare/1580428800/1581120000

https://backpack.tf/profiles/76561198202186637#!/compare/1580515200/1580774400

Sold for spell

sale 6:

https://backpack.tf/profiles/76561198202186637#!/compare/1581724800/1581897600

https://backpack.tf/profiles/76561198261359142#!/compare/1581552000/1581811200

Untrace

sale 7:

https://backpack.tf/profiles/76561198405176384#!/compare/1581033600/1581206400

https://backpack.tf/profiles/76561198026129220#!/compare/1580947200/1581033600

https://backpack.tf/profiles/76561198135281802#!/compare/1580774400/1581120000

Bulk QS then Bulk

sale 8:

https://backpack.tf/profiles/76561198135281802#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198091502579#!/compare/1584662400/1585008000

Bulk

sale 9:

https://backpack.tf/profiles/76561198091502579#!/compare/1585440000/1585526400

https://backpack.tf/profiles/76561198170049215#!/compare/1585526400/1585612800

MPTF

sale 10:

https://backpack.tf/profiles/76561198170049215#!/compare/1585872000/1587081600

https://backpack.tf/profiles/76561198837143610#!/compare/1586736000/1586908800

Untrace

sale 11:

https://backpack.tf/profiles/76561198397177352#!/compare/1580860800/1582070400

https://backpack.tf/profiles/76561198087362475#!/compare/1580860800/1580947200

Sold for 6 keys

sale 12:

https://marketplace.tf/items/tf2/30180;5;u58

$12 / $1.77 = 6.78 keys

$18 / $1.75 = 10.29 keys

$19.99 / $1.69 = 11.83 keys

$19.99 / $1.69 = 11.83 keys <--- https://backpack.tf/item/7956204479

total sales @:

7, 9, 10, 11, 12, 12 keys

buyers up to ~6.74 keys,

calling 7 low,

taking 9 - 12 keys