A strange situation.

Sale 1:

https://backpack.tf/profiles/76561198080179568#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198148514448#!/compare/1585699200/1585785600

Sold for 6 keys

Sale 2:

https://backpack.tf/profiles/76561198148514448#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198284637591#!/compare/1585699200/1585785600

Sold for Aces Trencher

use there

sale 3:

https://backpack.tf/profiles/76561198284637591#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198361900367#!/compare/1585699200/1585785600

Untrace

sale 4:

https://backpack.tf/profiles/76561198361900367#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198069493147#!/compare/1585699200/1585785600

Bulk

sale 5:

https://backpack.tf/profiles/76561198069493147#!/compare/1585699200/1585785600

https://backpack.tf/profiles/76561198150392490#!/compare/1585094400/1585785600

Sold for 6 keys

sale 6:

https://backpack.tf/profiles/76561198150392490#!/compare/1585785600/1586131200

https://backpack.tf/profiles/76561198272872626#!/compare/1585699200/1585785600

Can trace ~4.5 keys

sale 7:

https://backpack.tf/profiles/76561198272872626#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198172078559#!/compare/1585699200/1585785600

Sold for 6 keys

Sale 8:

https://backpack.tf/profiles/76561198172078559#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198069493147#!/compare/1585785600/1585872000

Sold with 4 keys for G Fetti Glengarry

use there

sale 9:

https://backpack.tf/profiles/76561198069493147#!/compare/1585872000/1585958400

https://backpack.tf/profiles/76561198051726874#!/compare/1585785600/1585958400

Sold with negligible sweets for 6 keys

sale 10:

https://backpack.tf/profiles/76561198051726874#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198375290326#!/compare/1586217600/1586304000

Sold for ~5.5 keys

sale 11:

https://backpack.tf/profiles/76561198375290326#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198916430174#!/compare/1586217600/1586304000

Sold for ~5.5 keys

sale 12:

https://backpack.tf/profiles/76561198916430174#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198916430174#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198177146103#!/compare/1586304000/1586390400

Sold for ~5.5 keys

sale 13:

https://backpack.tf/profiles/76561198177146103#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198858501353#!/compare/1586649600/1586736000

bulk

sale 14:

https://backpack.tf/profiles/76561198858501353#!/compare/1586649600/1586736000

https://backpack.tf/profiles/76561198080179568#!/compare/1586736000/1586822400

QS

sale 15:

https://backpack.tf/profiles/76561198080355107#!/compare/1580688000/1580774400

https://backpack.tf/profiles/76561198083578650#!/compare/1580601600/1580860800

Sold for 6 keys

sale 14:

https://backpack.tf/profiles/76561198037674114#!/compare/1586217600/1586131200

https://backpack.tf/profiles/76561198020673987#!/compare/1586131200/1586217600

https://backpack.tf/profiles/76561198850274253#!/compare/1586908800/1586995200

Untrace / bulk

sale 15:

https://backpack.tf/profiles/76561198081477129#!/compare/1585699200/1586044800

https://backpack.tf/profiles/76561198295486957#!/compare/1585872000/1586044800

QS

sale 16:

https://backpack.tf/profiles/76561198059021831#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198132093239#!/compare/1585872000/1586476800

Untrace

sale 17:

https://backpack.tf/profiles/76561198132093239#!/compare/1586476800/1588118400

https://backpack.tf/profiles/76561198045493149#!/compare/1586563200/1586649600

Untrace

Sale 18:

https://backpack.tf/profiles/76561198045493149#!/compare/1586649600/1587513600

https://backpack.tf/profiles/76561198799983169#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198171672427#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198020673987#!/compare/1586563200/1586649600

Untrace / bulk

Sale 19:

https://backpack.tf/profiles/76561198020673987#!/compare/1586822400/1586995200

https://backpack.tf/profiles/76561198850274253#!/compare/1586908800/1586995200

Untrace

Sale 20:

https://backpack.tf/profiles/76561198337734785#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198295486957#!/compare/1583020800/1583107200

Sold for ~5.5 keys (QS)

Sale 21:

https://marketplace.tf/items/tf2/330;5;u34

$11.49 / $1.72 = 6.68 keys

$10.99 / $1.69 = 6.50 keys <- https://backpack.tf/item/1438953547

Total sales @:

5.5, 5.5, 5.5, 5.5, 6, 6, 6, 6, 6, 6.5, 6.5 keys

sellers at ~5.61 keys,

buyers up to ~5.5 keys,

note that buyers are universal, but there are also alot of sales....

taking 5.5 - 6 keys, for now.