Sale 1:

https://backpack.tf/profiles/76561198062706278#!/compare/1568851200/1585872000

https://backpack.tf/profiles/76561198170205702#!/compare/1569801600/1587686400

Untrace

sale 2:

https://backpack.tf/profiles/76561198170205702#!/compare/1587686400/1587772800

https://backpack.tf/profiles/76561198088038722#!/compare/1587513600/1587772800

Sold for Aces Handle + spell + negligible sweets

low.

sale 3:

https://backpack.tf/profiles/76561198088038722#!/compare/1587772800/1587859200

https://backpack.tf/profiles/76561198261690163#!/compare/1587859200/1588032000

Untrace

sale 4:

https://backpack.tf/profiles/76561198050829867#!/compare/1586217600/1587168000

https://backpack.tf/profiles/76561198149038047#!/compare/1586822400/1586908800

can trace 5 keys

sale 5:

https://backpack.tf/profiles/76561198337734785#!/compare/1580515200/1580601600

https://backpack.tf/profiles/76561198335718650#!/compare/1580169600/1580774400

Sold for ~22 keys

Sale 6:

https://backpack.tf/profiles/76561198335718650#!/compare/1584403200/1584835200

https://backpack.tf/profiles/76561198206526981#!/compare/1537488000/1585180800

https://backpack.tf/profiles/76561198341171690#!/compare/1585094400/1585180800

Untrace

sale 7:

https://backpack.tf/profiles/76561198341171690#!/compare/1587513600/1587600000

https://backpack.tf/profiles/76561198068546927#!/compare/1587513600/1587600000

sold for keys

Sale 8:

https://backpack.tf/profiles/76561198068546927#!/compare/1587772800/1587859200

https://backpack.tf/profiles/76561198272038643#!/compare/1587772800/1587859200

untrace

Sale 9:

https://backpack.tf/profiles/76561198272038643#!/compare/1588032000/1588118400

https://backpack.tf/profiles/76561198318905691#!/compare/1586822400/1588118400

Sold for Scorching Airdog

https://bot.tf/stats/listings/4EP7PW7D

B/O of 28 keys, easily caps by buyers

sale 10:

https://backpack.tf/profiles/76561198318905691#!/compare/1588118400/1588204800

https://backpack.tf/profiles/76561198114635132#!/compare/1588118400/1588204800

sold with ~1 key in sweets for Stormy Boxcar

use there

sale 11:

https://backpack.tf/profiles/76561198114635132#!/compare/1588204800/1588291200

https://backpack.tf/profiles/76561198125190121#!/compare/1588204800/1588291200

sold with KaW Cotton for GE Napper

use there

https://bot.tf/stats/listings/MXXNDE3D

B/O of 30 keys

sale 12:

https://backpack.tf/profiles/76561198085903264#!/compare/1582416000/1584662400

https://backpack.tf/profiles/76561198823422389#!/compare/1582329600/1582416000

Sold for 20 keys

sale 13:

https://backpack.tf/profiles/76561198823422389#!/compare/1582588800/1582675200

https://backpack.tf/profiles/76561198855892118#!/compare/1582588800/1582675200

Sold for Aces Dread + 1 key

Dread sales are too high:

https://pastebin.com/MXeyJvSA

https://bot.tf/stats/listings/YDLGG5LV

B/O of 26 keys

sale 14:

https://backpack.tf/profiles/76561198855892118#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198118922746#!/compare/1582934400/1583020800

Sold with ~4 keys in sweets for Open Highway(10) + Steaming Company(12.5) + negligible sweets

Total is ~19 keys

https://bot.tf/stats/listings/Y5RWN0P9

B/O of 20 keys

Sale 15:

https://backpack.tf/profiles/76561198118922746#!/compare/1583280000/1583366400

https://backpack.tf/profiles/76561198308578398#!/compare/1583971200/1584057600

Untrace

sale 16:

https://backpack.tf/profiles/76561198308578398#!/compare/1584057600/1584144000

https://backpack.tf/profiles/76561198118922746#!/compare/1584057600/1584144000

sold with ~8 keys in sweets for PE Puffy

Puffy has no good mini:

https://pastebin.com/syvFLgu1

https://bot.tf/stats/listings/M0OZPPZX

B/O of 35 keys

Sale 17:

https://backpack.tf/profiles/76561198118922746#!/compare/1584057600/1584144000

https://backpack.tf/profiles/76561198150959184#!/compare/1583712000/1584144000

sold for CPS eye + ~12 keys in sweets

Eye Mini:

https://backpack.tf/suggestion/5eac72f0e55fdc30e424695e

suggestion for 17 keys

Total is 29 keys

sale 18:

https://backpack.tf/profiles/76561198039545401#!/compare/1581984000/1582329600

https://backpack.tf/profiles/76561198304302520#!/compare/1581897600/1581984000

QS

sale 19:

https://backpack.tf/profiles/76561198131983415#!/compare/1582848000/1582934400

https://backpack.tf/profiles/76561198335791307#!/compare/1582761600/1582848000

QS / bulk

sale 20, 21:

https://marketplace.tf/items/tf2/30976;5;u18

$33.80 / $1.68 = 20.12 keys

$44.99 / $1.84 = 24.45 keys

Total sales @:

19, 20, 20, 20, 22, 24, 28, 29 keys

buyers up to 17 keys,

sellers at 30 keys,

note that 28 is capped sale....

taking 19 - 24 keys.