Sale 1:

Sold with less than half a key in metal for 12 keys

https://backpack.tf/profiles/76561199564942025#!/compare/1776643200/1776729600

https://backpack.tf/profiles/76561199653935940#!/compare/1776643200/1776729600

https://backpack.tf/item/9651126329

= 12 keys

Sale 2:

Sold to a bot for 11 keys + less than half a key in metal

https://backpack.tf/profiles/76561199104559253#!/compare/1776902400/1777680000 - Near ID: 16987456987

https://backpack.tf/profiles/76561199059160806#!/compare/1777593600/1777680000

https://backpack.tf/item/15045028900

= 11 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/30922;5;u3174

$26.99, June 6th & $49.99, July 14th

https://backpack.tf/item/16355370084 - July 14th, couldn’t find the other

https://marketplace.tf/items/tf2/5021;6 - keys were:

$1.92, June 6th

$1.85, July 14th

26.99/1.92 = 14.057, rounds to 14 keys

49.99/1.85 = 27.022, rounds to 27 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199581722058#!/compare/1783641600/1783728000

https://backpack.tf/profiles/76561199072667073#!/compare/1783641600/1783728000

https://backpack.tf/item/8039539302

Untraceable

#2

https://backpack.tf/profiles/76561199653935940#!/compare/1776643200/1776729600

https://backpack.tf/profiles/76561198982058202#!/compare/1776816000/1776902400

https://backpack.tf/item/9651126329

Untraceable

#3

https://backpack.tf/profiles/76561198982058202#!/compare/1776816000/1776902400

https://backpack.tf/profiles/76561199085308746#!/compare/1776816000/1776902400

https://backpack.tf/item/9651126329

Untraceable

Sellers:

https://i.imgur.com/EX0ykOS.png

https://backpack.tf/item/8039539302 - ~11.3 keys

https://backpack.tf/item/9651126329 - ~11.3 keys

Sales at:

11

12

14 (marketplace)

27 (marketplace)

27 is a hilarious outlier. Excluding 27.

Going to also exclude 14 given the cheaper sellers.

Taking 11-12 keys.