Sale 1:

https://backpack.tf/profiles/76561198106849261#!/compare/1582070400/1582848000

https://backpack.tf/profiles/76561198061836787#!/compare/1582416000/1582502400

QS

sale 2:

https://backpack.tf/profiles/76561198874677360#!/compare/1580947200/1581033600

https://backpack.tf/profiles/76561198354459626#!/compare/1580947200/1581033600

Keys

sale 3:

https://backpack.tf/profiles/76561198252131286#!/compare/1581724800/1582070400

https://backpack.tf/profiles/76561198995112233#!/compare/1582070400/1583625600

Untrace / Scam

sale 4:

https://backpack.tf/profiles/76561198995112233#!/compare/1582070400/1583625600

https://backpack.tf/profiles/76561198305676157#!/compare/1582070400/1582934400

QS

sale 5:

https://backpack.tf/profiles/76561198305676157#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198283087657#!/compare/1582329600/1583280000

Sold for keys

sale 6:

https://backpack.tf/profiles/76561198283087657#!/compare/1582329600/1583280000

https://backpack.tf/profiles/76561197968633696#!/compare/1584230400/1584576000

Untrace

sale 7:

https://backpack.tf/profiles/76561198143066254#!/compare/1583712000/1585267200

https://backpack.tf/profiles/76561198090710982#!/compare/1585958400/1587513600

Untrace

sale 8:

https://backpack.tf/profiles/76561198305676157#!/compare/1581984000/1582070400

https://backpack.tf/profiles/76561198354459626#!/compare/1581984000/1582070400

sold for ~7.5 keys

sale 9:

https://backpack.tf/profiles/76561198263190057#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198075110874#!/compare/1586736000/1586822400

Bulk

sale 10:

https://backpack.tf/profiles/76561198075110874#!/compare/1586822400/1587340800

https://backpack.tf/profiles/76561198209728928#!/compare/1587254400/1587340800

Bulk

sale 11:

https://backpack.tf/profiles/76561198209728928#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198179392029#!/compare/1586995200/1587340800

Sold wit negligible sweets for Smoking Buckaroo

use there

sale 12:

https://backpack.tf/profiles/76561198454615761#!/compare/1581206400/1581292800

https://backpack.tf/profiles/76561198042055185#!/compare/1581206400/1581292800

Keys(?)

sale 13:

https://backpack.tf/profiles/76561198042055185#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561198874677360#!/compare/1581292800/1581379200

Can trace 2 keys

sale 14:

https://backpack.tf/profiles/76561198874677360#!/compare/1581984000/1582070400

https://backpack.tf/profiles/76561198070910160#!/compare/1581984000/1582070400

Sold for ~7 keys

sale 15:

https://backpack.tf/profiles/76561198878866368#!/compare/1580256000/1581033600

https://backpack.tf/profiles/76561198073175370#!/compare/1583452800/1583539200

Untrace / bulk

sale 16:

https://backpack.tf/profiles/76561198073175370#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198005023070#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198886850124#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198037674114#!/compare/1583107200/1583884800

Untrace

sale 17:

https://backpack.tf/profiles/76561198454615761#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198242217852#!/compare/1570233600/1585872000

Sold for 9 keys

Sale 18:

https://backpack.tf/profiles/76561198080355107#!/compare/1581897600/1581984000

https://backpack.tf/profiles/76561198073915338#!/compare/1581292800/1581984000

Sold for ~7.5 keys in sweets

sale 19:

https://backpack.tf/profiles/76561198073915338#!/compare/1582243200/1582329600

https://backpack.tf/profiles/76561198091639563#!/compare/1582243200/1582329600

Sold with 2 keys for Aussie Amby (9)

Total is 7 keys

Sale 20:

https://backpack.tf/profiles/76561198091639563#!/compare/1583020800/1583452800

https://backpack.tf/profiles/76561198813326440#!/compare/1583193600/1583280000

Sold for 7 keys

sale 21:

https://backpack.tf/profiles/76561198813326440#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198454615761#!/compare/1583539200/1583625600

QS

sale 22:

https://backpack.tf/profiles/76561198454615761#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198086611203#!/compare/1584748800/1584835200

Sold for keys

sale 23:

https://backpack.tf/profiles/76561198340634356#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561198096290234#!/compare/1583193600/1583280000

Sold for ~5.5 keys, probably more.

sale 24:

https://marketplace.tf/items/tf2/30840;5;u3006

$14.5 / $1.78 = 8.15 keys

$14.5 / $1.77 = 8.19 keys <--- https://backpack.tf/item/5690227452

$17.97 / $1.77 = 10.15 keys

$17.97 / $1.77 = 10.15 keys

$12.51 / $1.76 = 7.11 keys

$17.97 / $1.74 = 10.33 keys <--- https://backpack.tf/item/5371990641

$17.97 / $1.73 = 10.39 keys <--- https://backpack.tf/item/5703534089

$17.79 / $1.71 = 10.40 keys <--- https://backpack.tf/item/5362475154

$11.55 / $1.71 = 6.75 keys

$17.32 / $1.71 = 10.13 keys <--- https://backpack.tf/item/5355656895

$11.85 / $1.69 = 7.01 keys

$17.15 / $1.68 = 10.21 keys

$16.47 / $1.71 = 9.63 keys <--- https://backpack.tf/item/5502137800

$13 / $1.79 = 7.26 keys

$16.64 / $1.79 = 9.30 keys

Bot.tf:

1 @ 8 keys,

3 @ 7.5 keys,

2 @ 9 keys

3 @ 6.5 keys

Total sales @:

6.5 (x3)

7 (x6)

7.5 (x6)

8 (x3)

9 (x3)

9.5 (x2)

10 (x9)

buyers up to ~7 keys,

unsolds for 13 keys,

note that some 7, 6.5, 7.5 key sales happened when buyers were lower (~6 keys),

taking 7 - 10 keys.