Sale 1:

bulk

https://backpack.tf/profiles/76561198131633162#!/compare/1591142400/1591228800

https://backpack.tf/profiles/76561198044027534#!/compare/1590624000/1591228800

Sale 2:

untrace

https://backpack.tf/profiles/76561198850178158#!/compare/1594598400/1594684800

https://backpack.tf/profiles/76561198864760524#!/compare/1594598400/1594684800

Sale 3-7:

https://marketplace.tf/items/tf2/30069;5;u61

$33.33 / $1.90 = 17.54 keys

$33.33 / $1.90 = 17.54 keys

$33 / $1.89 = 17.46 keys

$33.99 / $1.97 = 17.25 keys

$32.99 / $1.92 = 17.18 keys // https://backpack.tf/item/7956941234

Sale 8:

bulk

https://backpack.tf/profiles/76561198055622215#!/compare/1592784000/1592956800

https://backpack.tf/profiles/76561198046926186#!/compare/1592870400/1593043200

Sale 9:

using on blizz pract

https://backpack.tf/profiles/76561198046926186#!/compare/1593043200/1593129600

https://backpack.tf/profiles/76561198207781828#!/compare/1593043200/1593129600

Sale 10:

7 keys + 43 ref

https://backpack.tf/profiles/76561198207781828#!/compare/1593129600/1593216000

https://backpack.tf/profiles/76561198157274202#!/compare/1593043200/1593129600

Sale 11:

bulk / bot transfer?

https://backpack.tf/profiles/76561198157274202#!/compare/1593129600/1593216000

https://backpack.tf/profiles/76561198355796365#!/compare/1593129600/1593216000

Sale 12:

bulk, then dumped to scrap

https://backpack.tf/profiles/76561198355796365#!/compare/1593216000/1593302400

https://backpack.tf/profiles/76561198044668296#!/compare/1587859200/1593475200

Sale 13:

untrace, probs gamble

https://backpack.tf/profiles/76561198067719183#!/compare/1588982400/1589155200

https://backpack.tf/profiles/76561198124723591#!/compare/1589155200/1589241600

Sale 14:

untrace, probs gamble

https://backpack.tf/profiles/76561198124723591#!/compare/1589241600/1589328000

https://backpack.tf/profiles/76561198011507712#!/compare/1589155200/1589328000

Sale 15:

untrace, probs gamble

https://backpack.tf/profiles/76561198011507712#!/compare/1589328000/1589414400

https://backpack.tf/profiles/76561198093170043#!/compare/1578873600/1589328000

Sale 16:

untrace, probs gamble, then dumped to scrap

https://backpack.tf/profiles/76561198093170043#!/compare/1589328000/1589414400

https://backpack.tf/profiles/76561198089253101#!/compare/1589241600/1589328000

Sale 17:

possibly 11 keys - under buyers anyway

https://backpack.tf/profiles/76561198850274253#!/compare/1592179200/1592265600

https://backpack.tf/profiles/76561198320412894#!/compare/1589932800/1592265600

Sale 18:

untrace

https://backpack.tf/profiles/76561198320412894#!/compare/1592265600/1593734400

https://backpack.tf/profiles/76561198880361166#!/compare/1592179200/1592265600

Sale 19:

untrace

https://backpack.tf/profiles/76561198880361166#!/compare/1592352000/1592524800

https://backpack.tf/profiles/76561198124723591#!/compare/1592265600/1592611200

Sale 20:

untrace

https://backpack.tf/profiles/76561198124723591#!/compare/1592611200/1592784000

https://backpack.tf/profiles/76561198081172172#!/compare/1585267200/1592697600

Sale 21:

untrace

https://backpack.tf/profiles/76561198081172172#!/compare/1592697600/1592784000

https://backpack.tf/profiles/76561198297347535#!/compare/1592352000/1592956800

Sale 22:

bp not loading but probs QS

https://backpack.tf/profiles/76561198297347535#!/compare/1594425600/1594512000

https://backpack.tf/profiles/76561198267189538#!/compare/1594598400/1594684800

=================================================================

Sales:

17,17,17,18,18

1 month unsold at 16: https://imgur.com/a/h7lAtiX

seller at 14 no longer owns it, bp not loading - looks like they QS'd it (sale 22)