Sale 1:

https://backpack.tf/profiles/76561198344491537#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198166503718#!/compare/1566086400/1567382400

unsualified here

sale 2:

https://backpack.tf/profiles/76561198166503718#!/compare/1569715200/1574035200

https://backpack.tf/profiles/76561198058540459#!/compare/1554940800/1569974400

SCM

sale 3:

https://backpack.tf/profiles/76561198138105768#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198197802471#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198197802471#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198012588653#!/compare/1566000000/1570924800

Untrace

Sale 4:

https://backpack.tf/profiles/76561198088775634#!/compare/1572566400/1572652800

https://backpack.tf/profiles/76561198340634356#!/compare/1572566400/1572652800

QS

sale 5:

https://backpack.tf/profiles/76561197963764911#!/compare/1573862400/1573948800

https://backpack.tf/profiles/76561198163475348#!/compare/1573862400/1573948800

Untrace

sale 6:

https://backpack.tf/profiles/76561198275526468#!/compare/1566604800/1568246400

https://backpack.tf/profiles/76561198094644584#!/compare/1566518400/1566950400

Untrace

sale 6:

https://backpack.tf/profiles/76561198094644584#!/compare/1567123200/1567382400

https://backpack.tf/profiles/76561198065749444#!/compare/1567296000/1567382400

Sold for ~3.65 keys

Sale 7:

https://backpack.tf/profiles/76561198371026030#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198210700703#!/compare/1570492800/1570579200

Untrace

sale 8:

https://backpack.tf/profiles/76561198210700703#!/compare/1570579200/1570665600

https://backpack.tf/profiles/76561198340634356#!/compare/1570492800/1570579200

QS

sale 9:

https://backpack.tf/profiles/76561198340634356#!/compare/1571529600/1571616000

https://backpack.tf/profiles/76561198155770721#!/compare/1571443200/1571788800

Keys

sale 10:

https://backpack.tf/profiles/76561198155770721#!/compare/1571788800/1573257600

https://backpack.tf/profiles/76561198080179568#!/compare/1573171200/1573257600

QS

Sale 11:

https://backpack.tf/profiles/76561198377919903#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198134238543#!/compare/1566604800/1566691200

Bulky

sale 12:

https://backpack.tf/profiles/76561198134238543#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198116105833#!/compare/1566604800/1566691200

Sold for ~3 keys

Sale 13:

https://backpack.tf/profiles/76561198116105833#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198257831821#!/compare/1566518400/1567036800

low

sale 14:

https://backpack.tf/profiles/76561198305676157#!/compare/1569110400/1569196800

https://backpack.tf/profiles/76561198315141216#!/compare/1569110400/1569196800

sold for ~2.75 keys

sale 15:

https://backpack.tf/profiles/76561198176218038#!/compare/1568332800/1568505600

https://backpack.tf/profiles/76561198337053760#!/compare/1568419200/1568505600

Bulky

sale 16:

https://backpack.tf/profiles/76561198337053760#!/compare/1568419200/1568505600

https://backpack.tf/profiles/76561198305676157#!/compare/1568419200/1568505600

QS

sale 17:

https://backpack.tf/profiles/76561198134581430#!/compare/1566432000/1566518400

https://backpack.tf/profiles/76561198258463942#!/compare/1565740800/1567728000

Untrace

sale 18:

https://backpack.tf/profiles/76561198037453977#!/compare/1568505600/1571356800

https://backpack.tf/profiles/76561198367892937#!/compare/1568505600/1569196800

https://backpack.tf/profiles/76561198384369082#!/compare/1568419200/1568505600

https://backpack.tf/profiles/76561198986633877#!/compare/1568505600/1568505600

https://backpack.tf/profiles/76561198880384227#!/compare/1568073600/1568764800

untrace / bulk

Sale 19 - 26:

https://marketplace.tf/items/tf2/1116;5;u3001

$7.3 / $1.82 = 4.01 keys <--- https://backpack.tf/item/4524779545

$5 / $1.82 = 2.75 keys <--- https://backpack.tf/item/3019428959

$5 / $1.81 = 2.76 keys

$5 / $1.81 = 2.76 keys

$6 / $1.81 = 3.31 keys

$4.3 / $1.78 = 2.42 keys

$5.99 / $1.77 = 3.38 keys

$5.99 / $1.79 = 3.35 keys <--- https://backpack.tf/item/4528643342

Bot.tf:

https://bot.tf/stats/item?def=1116&q=5&ef=Showstopper&craft=1&aus=0&ks=0&source=browser_script

1 @ 3 keys,

3 @ 2.75 keys,

1 @ ~2.65 keys,

3 @ ~2.60 keys,

1 @ ~2.40 keys

total sales @:

2.4 (x2)

2.6 (x3)

2.65

2.75 (x7)

3 (x2)

3.3

3.35

3.4

3.65

4

buyers up to ~2.65 keys,

seller at 3 keys, unsod for ~2 weeks,

calling 2.6 low,

3.3 high,

taking 2.65 - 3 keys.