Sale 1:

https://backpack.tf/profiles/76561198280176587#!/compare/1586044800/1586217600

https://backpack.tf/profiles/76561198341171690#!/compare/1586131200/1586217600

Sold for 12 keys (QS)

sale 2:

https://backpack.tf/profiles/76561198120672630#!/compare/1582416000/1582502400

https://backpack.tf/profiles/76561198121191976#!/compare/1582502400/1582588800

Sold for G fetti Fedora + ~5 keys in sweets

use there, though note that sale here would cap easily at B/O

https://bot.tf/stats/listings/Y8E37RGZ

B/O of 17 keys

sale 3:

https://backpack.tf/profiles/76561198121191976#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198167383619#!/compare/1582934400/1583020800

Sold for C9 Inspecteur + GHG Wanted + ~0.5 keys in sweets

Inspecteur Mini:

https://backpack.tf/suggestion/5ebdb5a2a3a4932d0c0d91f9

Suggestion for 10.5 keys

Wanted Mini:

https://backpack.tf/suggestion/5ebdb7ae3c309e329163f6f7

Suggestion for ~2.85 keys

Total is ~14 keys

https://bot.tf/stats/listings/4RG893VD

B/O of 18 keys

sale 4:

https://backpack.tf/profiles/76561198089253101#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198061694931#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198037674114#!/compare/1585526400/1586131200

https://backpack.tf/profiles/76561198020673987#!/compare/1587254400/1587081600

https://backpack.tf/profiles/76561198850274253#!/compare/1587340800/1587427200

Bulk / untrace / QS

sale 5:

https://backpack.tf/profiles/76561198850274253#!/compare/1588291200/1588377600

https://backpack.tf/profiles/76561198354979270#!/compare/1588377600/1588464000

Untrace

sale 6:

https://backpack.tf/profiles/76561198061376237#!/compare/1582675200/1582761600

https://backpack.tf/profiles/76561198341171690#!/compare/1582675200/1582761600

Sold for ~13 keys (QS)

sale 7:

https://backpack.tf/profiles/76561198341171690#!/compare/1584921600/1585008000

https://backpack.tf/profiles/76561198839632074#!/compare/1585008000/1585094400

sold for 17 keys

Sale 8:

https://backpack.tf/profiles/76561198839632074#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198311400236#!/compare/1585094400/1585180800

Sold for keys, can count 12...

sale 9:

https://backpack.tf/profiles/76561198311400236#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198037931034#!/compare/1585440000/1585526400

Sold for Leak YWN + ~3 keys in sweets

use there

https://bot.tf/stats/listings/MXXX5K9P

B/O of 19 keys

sale 10:

https://marketplace.tf/items/tf2/31025;5;u58

$29.99 / $1.69 = 17.75 keys

Total sales @:

12, 13, 14, 17, 18 keys

buyers up to ~13.59 keys,

sellers down to 17 keys,

let's try 14 - 17 keys....