Sale 1:

https://backpack.tf/profiles/76561198850274253#!/compare/1591401600/1591488000

https://backpack.tf/profiles/76561198125227306#!/compare/1589500800/1591488000

Untrace

Sale 2:

https://backpack.tf/profiles/76561198125227306#!/compare/1592092800/1593043200

https://backpack.tf/profiles/76561198136702159#!/compare/1593043200/1593129600

Untrace

sale 3:

https://backpack.tf/profiles/76561198136702159#!/compare/1593216000/1593302400

https://backpack.tf/profiles/76561198124241068#!/compare/1591315200/1593302400

https://i.imgur.com/oTi1yGX.jpg

Sold for 22 keys (confirmed by Broatsky, will get better screencap soon)

Sale 4:

https://backpack.tf/profiles/76561198124241068#!/compare/1593302400/1593734400

https://backpack.tf/profiles/76561198086703289#!/compare/1592524800/1593907200

Sold for 24 keys

sale 5:

https://backpack.tf/profiles/76561198046601398#!/compare/1588723200/1589846400

https://backpack.tf/profiles/76561198396018338#!/compare/1583712000/1591833600

Untrace

sale 6:

https://backpack.tf/profiles/76561198122002056#!/compare/1588291200/1588204800

https://backpack.tf/profiles/76561198454615761#!/compare/1588204800/1588291200

QS

sale 7:

https://marketplace.tf/items/tf2/100;5;u8

$44.99 / $1.81 = 24.86 keys

$44.99 / $1.92 = 23.43 keys <--- https://backpack.tf/item/502082090

$44.99 / $1.99 = 22.61 keys <--- https://backpack.tf/item/4996145166 | https://bot.tf/stats/listings/MLVQ97GG B/O of 22 keys, capping

$41.99 / $2.00 = 21.00 keys

Sale 11:

https://backpack.tf/profiles/76561197964171516#!/compare/1592524800/1592611200

https://backpack.tf/profiles/76561198214255256#!/compare/1592265600/1592611200

Sold for 22 keys

Sale 12:

https://backpack.tf/profiles/76561198307746956#!/compare/1592092800/1593388800

https://backpack.tf/profiles/76561198123320032#!/compare/1593216000/1593388800

Bulk

Total sales @:

21, 22, 22, 22, 23, 24, 25 keys

https://i.imgur.com/bWoK6WE.jpg

new seller for 23 keys,

buyers up to ~19 keys,

taking 21 - 25 keys.