Sale 1:

https://backpack.tf/profiles/76561198298597700#!/compare/1581206400/1581292800

https://backpack.tf/profiles/76561198253177889#!/compare/1581206400/1581292800

sold for 30 keys

30 keys directly match going from sky to stupid. Note that none of the histories of the pair of 36 match at all.

in the histories of the keys in Sky's side, we can see that the keys went from stupid to sprekt the same day:

https://backpack.tf/profiles/76561198267189538#!/compare/1581206400/1581292800

and were used to buy the C9 Pencil. the histories of the keys there match with the one's from sky's compare.

therefore, the sale was for 30 keys.

sale 2:

https://backpack.tf/profiles/76561198214814260#!/compare/1581638400/1582934400

https://backpack.tf/profiles/76561198137408503#!/compare/1582848000/1582934400

sold for 21 keys

sale 3:

https://backpack.tf/profiles/76561198201955186#!/compare/1583798400/1584230400

https://backpack.tf/profiles/76561198043996567#!/compare/1584057600/1584230400

sold for 20 keys

sale 4:

https://backpack.tf/profiles/76561198043996567#!/compare/1584057600/1584230400

https://backpack.tf/profiles/76561198378696925#!/compare/1584230400/1584316800

Sold for Stormy France + ~2 keys in sweets

use there

sale 5:

https://backpack.tf/profiles/76561198378696925#!/compare/1584316800/1584489600

https://backpack.tf/profiles/76561198056974324#!/compare/1584403200/1584489600

sold for OF Scopers + ~2 keys in sweets

use there, ends up low.

sale 6:

https://backpack.tf/profiles/76561198056974324#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198838788284#!/compare/1584576000/1584662400

Sold for Icefall Spiky

Spiky Mini:

https://backpack.tf/suggestion/5eb45d800731bb4ab53fb6ec

Suggestion for 24 keys

sale 7:

https://backpack.tf/profiles/76561198838788284#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198847471026#!/compare/1584921600/1585180800

Can trace 4 keys

sale 8:

https://backpack.tf/profiles/76561198847471026#!/compare/1587513600/1587600000

https://backpack.tf/profiles/76561198173442901#!/compare/1587513600/1587600000

Sold with negligible sweets for PE Convict

use there

Sale 9:

https://backpack.tf/profiles/76561198173442901#!/compare/1587600000/1587686400

https://backpack.tf/profiles/76561198220121581#!/compare/1587600000/1587772800

sold for 12 keys

sale 10:

https://backpack.tf/profiles/76561198220121581#!/compare/1587859200/1587945600

https://backpack.tf/profiles/76561198278481498#!/compare/1587772800/1587945600

Bulky

sale 11:

https://marketplace.tf/items/tf2/31098;5;u145

$35 / $1.82 = 19.23 keys

$30 / $1.87 = 16.04 keys

Total sales @:

12, 16, 19, 20, 21, 24, 30 keys

buyers up to 12 keys,

calling 12 low,

30 high,

taking 16 - 24 keys.