Sale 1:

https://backpack.tf/profiles/76561198219377359#!/compare/1582502400/1582588800

https://backpack.tf/profiles/76561198210225228#!/compare/1582502400/1582588800

Bulk

sale 2:

https://backpack.tf/profiles/76561198210225228#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198069302272#!/compare/1585440000/1585785600

Sold for 29 keys + C9 Guad

https://bot.tf/stats/listings/Y800V809

B/O of 39 keys, easily caps by buyers

sale 3:

https://backpack.tf/profiles/76561198069302272#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561199018358282#!/compare/1585785600/1585872000

Sold for DBD Bomber

use there

sale 4:

https://backpack.tf/profiles/76561199018358282#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198077870175#!/compare/1585785600/1585872000

Sold for 35 keys

sale 5:

https://backpack.tf/profiles/76561198077870175#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198125247757#!/compare/1586131200/1586304000

Bulk

Sale 6:

https://backpack.tf/profiles/76561198125247757#!/compare/1589414400/1589760000

https://backpack.tf/profiles/76561198220098345#!/compare/1589414400/1589500800

Bulk for keys

Sale 7:

https://backpack.tf/profiles/76561198182549022#!/compare/1582156800/1582243200

https://backpack.tf/profiles/76561198372127799#!/compare/1582243200/1582329600

untrace

sale 8:

https://backpack.tf/profiles/76561198372127799#!/compare/1583798400/1583971200

https://backpack.tf/profiles/76561198175367966#!/compare/1583884800/1583971200

Sold for ~33 keys

Sale 9:

https://backpack.tf/profiles/76561198175367966#!/compare/1583884800/1583971200

https://backpack.tf/profiles/76561198305494036#!/compare/1583884800/1583971200

QS

sale 10:

https://backpack.tf/profiles/76561198305494036#!/compare/1583971200/1584057600

https://backpack.tf/profiles/76561198129496130#!/compare/1583971200/1584057600

sold for 34 keys

sale 11:

https://backpack.tf/profiles/76561198129496130#!/compare/1584489600/1584576000

https://backpack.tf/profiles/76561198826254247#!/compare/1584489600/1584576000

Sold for Beams Billy + 1 key

Billy Mini:

https://backpack.tf/suggestion/5ec37e2ffc72c359142b1815

Suggestion for 36 keys

Total is 37 keys

https://bot.tf/stats/listings/Y5ZRODZE

B/O of 39 keys

sale 12:

https://backpack.tf/profiles/76561198826254247#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198305494036#!/compare/1584576000/1584662400

QS

sale 13:

https://backpack.tf/profiles/76561198305494036#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198218628708#!/compare/1584316800/1584662400

Sold for 34 keys

Sale 14:

https://backpack.tf/profiles/76561198415564349#!/compare/1588809600/1589068800

https://backpack.tf/profiles/76561198068505495#!/compare/1588809600/1588982400

Untrace

sale 15:

https://marketplace.tf/items/tf2/181;5;u89

$51.1 / $1.78 = 28.71 keys

Sale 16:

https://backpack.tf/profiles/76561198218628708#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198415564349#!/compare/1587340800/1587427200

Sold for 38 keys

Total sales @:

29, 33, 34, 34, 35, 37, 38, 39 keys