Taking sales from July 1st on.

Sale 1:

https://backpack.tf/profiles/76561198210225228#!/compare/1564704000/1564790400

https://backpack.tf/profiles/76561198024282674#!/compare/1563580800/1565654400

SCM

Sale 2:

https://backpack.tf/profiles/76561198089456722#!/compare/1564790400/1565136000

https://backpack.tf/profiles/76561198379415741#!/compare/1564963200/1565136000

Untrace

Sale 3:

https://backpack.tf/profiles/76561198379415741#!/compare/1565136000/1565222400

https://backpack.tf/profiles/76561198003926663#!/compare/1565049600/1565136000

https://backpack.tf/profiles/76561198131081286#!/compare/1563321600/1563408000

https://backpack.tf/profiles/76561198003926663#!/compare/1565049600/1565136000

https://backpack.tf/profiles/76561198802802073#!/compare/1565136000/1565222400

https://backpack.tf/profiles/76561198857393271#!/compare/1565136000/1565222400

https://backpack.tf/profiles/76561198912836088#!/compare/1565136000/1565222400

Untrace

Sale 4:

https://backpack.tf/profiles/76561198380722433#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198088076430#!/compare/1567209600/1568160000

Can trace a key

Sale 5:

https://backpack.tf/profiles/76561198271941547#!/compare/1565136000/1565395200

https://backpack.tf/profiles/76561198086571478#!/compare/1565222400/1565481600

Bulk

Sale 6:

https://backpack.tf/profiles/76561198210225228#!/compare/1564531200/1564617600

https://backpack.tf/profiles/76561198107354567#!/compare/1556064000/1565481600

SCM

Sale 7:

https://backpack.tf/profiles/76561198260686830#!/compare/1568160000/1568246400

https://backpack.tf/profiles/76561198163251147#!/compare/1568073600/1568160000

untrace

sale 8:

https://backpack.tf/profiles/76561198163251147#!/compare/1568073600/1568160000

https://backpack.tf/profiles/76561198382290208#!/compare/1568160000/1568246400

QS

sale 9:

https://backpack.tf/profiles/76561198382290208#!/compare/1568246400/1568332800

https://backpack.tf/profiles/76561198210225228#!/compare/1568246400/1568332800

Transfer

Sale 10:

https://backpack.tf/profiles/76561198185749394#!/compare/1565049600/1565395200

https://backpack.tf/profiles/76561198453530349#!/compare/1565049600/1566259200

Untrace

Sale 11:

https://backpack.tf/profiles/76561198332034962#!/compare/1564617600/1564704000

https://backpack.tf/profiles/76561198363395191#!/compare/1564617600/1564704000

Sold for ~2.87 keys

Sale 12:

https://backpack.tf/profiles/76561198363395191#!/compare/1564790400/1564876800

https://backpack.tf/profiles/76561198367693212#!/compare/1564617600/1565049600

SCM

Sale 13:

https://backpack.tf/profiles/76561198367693212#!/compare/1565222400/1566518400

https://backpack.tf/profiles/76561198172885918#!/compare/1557446400/1566518400

SCM

Sale 14:

https://backpack.tf/profiles/76561198340634356#!/compare/1566172800/1566259200

https://backpack.tf/profiles/76561198399707731#!/compare/1565308800/1566691200

Keys

Sale 15:

https://backpack.tf/profiles/76561198335791307#!/compare/1567987200/1568073600

https://backpack.tf/profiles/76561198132750905#!/compare/1567900800/1568073600

Keys

Sale 16:

https://backpack.tf/profiles/76561198802360768#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198111977118#!/compare/1566000000/1566086400

Bulk

Sale 17:

https://backpack.tf/profiles/76561198111977118#!/compare/1566345600/1566432000

https://backpack.tf/profiles/76561198204863571#!/compare/1566345600/1566432000

Untrace

Sale 18 - 29:

https://marketplace.tf/items/tf2/30572;5;u3007

$6.2 / $1.82 = 3.41 keys <-- https://backpack.tf/item/3613013321

$6 / $1.81 = 3.31 keys <-- https://backpack.tf/item/3842098488

$6.2 / $1.82 = 3.41 keys <-- https://backpack.tf/item/3613013321

$3.25 / $1.84 = 1.77 keys <-- https://backpack.tf/item/3595420085

$3.26 / $1.84 = 1.77 keys <-- https://backpack.tf/item/3595420085

$6 / $1.84 = 3.26 keys

$6 / $1.84 = 3.26 keys

$5.80 / $1.84 = 3.15 keys

$5.80 / $1.84 = 3.15 keys

$8.54 / $1.82 = 4.69 keys

$3.31 / $1.82 = 1.82 keys

Sale 30:

https://backpack.tf/profiles/76561198062290614#!/compare/1564444800/1564617600

https://backpack.tf/profiles/76561198382290208#!/compare/1564358400/1564444800

QS

Sale 31:

https://backpack.tf/profiles/76561198290635755#!/compare/1562198400/1562976000

https://backpack.tf/profiles/76561198317606171#!/compare/1562112000/1562198400

Untrace

Sale 32:

https://backpack.tf/profiles/76561198133941068#!/compare/1562198400/1567900800

https://backpack.tf/profiles/76561198311076378#!/compare/1564099200/1564099200

Untrace

Sale 33:

https://backpack.tf/profiles/76561198027115020#!/compare/1562025600/1562112000

https://backpack.tf/profiles/76561198363395191#!/compare/1561939200/1562025600

Sold for ~2.34 keys

Sale 34:

https://backpack.tf/profiles/76561198363395191#!/compare/1562198400/1562284800

https://backpack.tf/profiles/76561198108544093#!/compare/1542412800/1564790400

Untrace

Sale 35:

https://backpack.tf/profiles/76561198049677507#!/compare/1563408000/1563494400

https://backpack.tf/profiles/76561198062797298#!/compare/1563494400/1563840000

Untrace

Sale 36:

https://backpack.tf/profiles/76561198062797298#!/compare/1564531200/1565136000

https://backpack.tf/profiles/76561198309563748#!/compare/1564444800/1564704000

QS to bot

Sale 37:

https://backpack.tf/profiles/76561198286543973#!/compare/1563580800/1563667200

https://backpack.tf/profiles/76561198345415891#!/compare/1563667200/1563753600

Not unusual

Sale 38:

https://backpack.tf/profiles/76561198345415891#!/compare/1563840000/1563926400

https://backpack.tf/profiles/76561197999187814#!/compare/1563840000/1566000000

Not unusual

Sale 39:

https://backpack.tf/profiles/76561198294524487#!/compare/1555027200/1564185600

https://backpack.tf/profiles/76561198332034962#!/compare/1564185600/1564358400

Not unusual

Sale 40:

https://backpack.tf/profiles/76561198832602199#!/compare/1563926400/1564012800

https://backpack.tf/profiles/76561198072781633#!/compare/1563926400/1564012800

Untrace

Sale 41:

https://backpack.tf/profiles/76561198072781633#!/compare/1564012800/1564099200

https://backpack.tf/profiles/76561198333417038#!/compare/1563667200/1564012800

https://backpack.tf/profiles/76561198072781633#!/compare/1563926400/1564012800

Untrace

Sale 42:

https://backpack.tf/profiles/76561198207887296#!/compare/1563494400/1563580800

https://backpack.tf/profiles/76561198350704417#!/compare/1563494400/1563580800

Bulk

Sale 43:

https://backpack.tf/profiles/76561198350704417#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198363395191#!/compare/1563667200/1563753600

QS

Sale 44 - 52:

https://marketplace.tf/items/tf2/30572;5;u3007

$6.2 / $1.83 = 3.39 keys

$6.2 / $1.84 = 3.37 keys

$6.00 / $1.84 = 3.26 keys

$6.2 / $1.83 = 3.39 keys <-- https://backpack.tf/item/4445626079

$3.12 / $1.81 = 1.72 keys

$3.09 / $1.78 = 1.74 keys

$6.2 / $1.80 = 3.44 keys <-- https://backpack.tf/item/3614566390

$4.99 / $1.80 = 2.77 keys

$4.99 / $1.80 = 2.77 keys <-- https://backpack.tf/item/3840608735

Bot.tf:

https://bot.tf/stats/item?def=30572&q=5&ef=Skill%20Gotten%20Gains&craft=1&aus=0&ks=0

https://i.imgur.com/hIPOqSl.png

1 @ 3 keys, 12.00 ref 7/28/2019, 6:44:16 AM

1 @ 3 keys, 12.00 ref 8/19/2019, 11:14:21 PM

1 @ 3 keys, 12.00 ref 8/20/2019, 7:56:47 AM

1 @ 3 keys, 20.00 ref 8/31/2019, 7:21:59 AM

1 @ 3 keys, 10.00 ref 9/1/2019, 4:21:56 AM

1 @ 3 keys, 12.00 ref 9/10/2019, 12:51:46 PM

1 @ 2 keys, 40.00 ref 6/25/2019, 3:21:06 AM

1 @ 2 keys, 20.00 ref 8/5/2019, 9:51:11 PM

1 @ 2 keys, 22.00 ref 8/17/2019, 6:33:13 PM

Total sales @:

1.7

1.75 (x3)

1.8

2.35

2.45

2.5

2.75 (x2)

2.85

2.9

3.15 (x2)

3.25 (x8)

3.3

3.35

3.4 (x4)

3.45 (x2)

4.7

buyers up to 3 keys,

sellers down to 5 keys,

taking 3.15 - 3.45 keys.