Sale 1:

https://backpack.tf/profiles/76561198137532237#!/compare/1549584000/1549756800

https://backpack.tf/profiles/76561198189261053#!/compare/1549411200/1549584000

https://backpack.tf/profiles/76561198341171690#!/compare/1549497600/1549584000

2 bulk sales

Sale 2:

https://backpack.tf/item/2874598202

can't trace anything here

sale 3:

https://backpack.tf/profiles/76561198151000283#!/compare/1550016000/1550102400

https://backpack.tf/profiles/76561198081059847#!/compare/1549843200/1550016000

Untrace / bulk

Sale 4:

https://backpack.tf/profiles/76561198081059847#!/compare/1550016000/1553126400

https://backpack.tf/profiles/76561198091636896#!/compare/1549929600/1550016000

Untrace

Sale 5:

https://backpack.tf/profiles/76561198019116055#!/compare/1549324800/1553990400

https://backpack.tf/profiles/76561198090737788#!/compare/1553990400/1554076800

SCM

Sale 6:

https://backpack.tf/profiles/76561198335791307#!/compare/1555632000/1555718400

https://backpack.tf/profiles/76561198043165516#!/compare/1549756800/1555718400

Keys.

Sale 7:

https://backpack.tf/item/6410029697

becomes unusual in Zeus' inv

Sale 8:

https://backpack.tf/item/3526361519

not unusual till D Alex

Sale 9:

https://backpack.tf/profiles/76561198246546920#!/compare/1552348800/1552694400

https://backpack.tf/profiles/76561198843030293#!/compare/1552348800/1552435200

Sold for ~3 keys

Sale 10:

https://backpack.tf/profiles/76561198843030293#!/compare/1552435200/1552521600

https://backpack.tf/profiles/76561198454615761#!/compare/1552435200/1552521600

Sold for ~3.5 keys

Sale 11:

https://backpack.tf/profiles/76561198454615761#!/compare/1553212800/1553299200

https://backpack.tf/profiles/76561198163642350#!/compare/1553299200/1553385600

https://backpack.tf/profiles/76561198163642350#!/compare/1554163200/1554595200

bought and then resold for (presumably) lower

Sale 12:

https://backpack.tf/profiles/76561198039558598#!/compare/1549670400/1549756800

https://backpack.tf/profiles/76561198864494374#!/compare/1549756800/1550275200

https://backpack.tf/profiles/76561198363395191#!/compare/1549670400/1549756800

Untrace / QS

Sale 13:

https://backpack.tf/profiles/76561198363395191#!/compare/1553731200/1553817600

https://backpack.tf/profiles/76561198198728062#!/compare/1553126400/1553904000

SCM

sale 14:

https://backpack.tf/profiles/76561198419584303#!/compare/1550016000/1550102400

https://backpack.tf/profiles/76561198838870134#!/compare/1549584000/1550361600

Untrace

Sale 15:

https://backpack.tf/profiles/76561198838870134#!/compare/1549584000/1550361600

https://backpack.tf/profiles/76561198037674114#!/compare/1549670400/1550448000

Bulk

Sale 16:

https://backpack.tf/profiles/76561198037674114#!/compare/1550448000/1550534400

https://backpack.tf/profiles/76561198841279602#!/compare/1550361600/1550448000

QS?

Sale 17:

https://backpack.tf/profiles/76561198841279602#!/compare/1550707200/1550793600

https://backpack.tf/profiles/76561198271715957#!/compare/1550707200/1550793600

Keys, can only trace one

Sale 18:

https://backpack.tf/profiles/76561198271715957#!/compare/1551052800/1551139200

https://backpack.tf/profiles/76561198363395191#!/compare/1551052800/1551139200

Sold for ~3.5 keys

Sale 19:

https://backpack.tf/profiles/76561197977733292#!/compare/1553299200/1553472000

https://backpack.tf/profiles/76561198035057991#!/compare/1553385600/1553558400

Untrace

sale 20:

https://backpack.tf/profiles/76561198349181069#!/compare/1555718400/1555804800

https://backpack.tf/profiles/76561198454615761#!/compare/1555718400/1555804800

Sold for ~3.5 keys

Sale 21:

https://backpack.tf/profiles/76561198062255099#!/compare/1549152000/1549238400

https://backpack.tf/profiles/76561198363395191#!/compare/1549152000/1549238400

QS

Sale 22:

https://backpack.tf/profiles/76561198363395191#!/compare/1554336000/1554422400

https://backpack.tf/profiles/76561198142899455#!/compare/1554422400/1554508800

SCM

Sale 23:

https://backpack.tf/profiles/76561198142899455#!/compare/1555027200/1555113600

https://backpack.tf/profiles/76561198095236132#!/compare/1555027200/1555113600

Bulk

Sale 24:

https://backpack.tf/profiles/76561198095236132#!/compare/1555027200/1555113600

https://backpack.tf/profiles/76561198454615761#!/compare/1555027200/1555113600

Sold for 3 keys

Sale 25:

https://backpack.tf/profiles/76561198356476344#!/compare/1546128000/1548979200

https://backpack.tf/profiles/76561198796559482#!/compare/1548892800/1548979200

https://backpack.tf/profiles/76561198340634356#!/compare/1548892800/1548979200

Untrace / QS

Sale 26:

https://backpack.tf/profiles/76561198147578696#!/compare/1552694400/1553558400

https://backpack.tf/profiles/76561198138242189#!/compare/1550793600/1552780800

SCM

Sale 27:

https://backpack.tf/profiles/76561198138242189#!/compare/1552780800/1553040000

https://backpack.tf/profiles/76561198814151144#!/compare/1553817600/1555027200

SCM:

Sale 28:

https://backpack.tf/profiles/76561198814151144#!/compare/1555027200/1555632000

https://backpack.tf/profiles/76561198271077569#!/compare/1555545600/1555632000

Untrace

Sale 29:

https://backpack.tf/profiles/76561198143229539#!/compare/1555718400/1555804800

https://backpack.tf/profiles/76561198299312205#!/compare/1555632000/1555804800

Untrace

Sale 30 - 31:

https://marketplace.tf/items/1112;5;u3010

$7.90 / $1.75 = 4.51 keys

$7.90 / $1.81 = 4.36 keys

Total sales @:

3, 3, 3.5, 3.5, 3.5, 4.36, 4.51 keys

Buyers at 3.31,

Sellers at 4 keys,

taking 3.5 keys.