Taking last 2 months (Aug 10 on)

Sale 1:

https://backpack.tf/profiles/76561198003182128#!/compare/1568592000/1569715200

https://backpack.tf/profiles/76561198125791160#!/compare/1569542400/1569715200

Bulk

sale 2:

https://backpack.tf/profiles/76561198299911038#!/compare/1567296000/1567382400

https://backpack.tf/profiles/76561198003920441#!/compare/1566518400/1567382400

SCM

Sale 3:

https://backpack.tf/profiles/76561198145703629#!/compare/1567468800/1568419200

https://backpack.tf/profiles/76561198170165054#!/compare/1568678400/1569024000

SCM

Sale 4:

https://backpack.tf/profiles/76561198170165054#!/compare/1570492800/1570579200

https://backpack.tf/profiles/76561198363395191#!/compare/1570406400/1570492800

QS

Sale 5:

https://backpack.tf/profiles/76561198453530349#!/compare/1567036800/1567123200

https://backpack.tf/profiles/76561198314703172#!/compare/1567036800/1567209600

Sold for ~12 keys

Sale 6:

https://backpack.tf/profiles/76561198193098277#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198174009537#!/compare/1567814400/1567900800

sold for DBD Complex

use there

Sale 7:

https://backpack.tf/profiles/76561198174009537#!/compare/1568246400/1568332800

https://backpack.tf/profiles/76561198080179568#!/compare/1568246400/1568332800

Bulk

Sale 8:

https://backpack.tf/profiles/76561198273915922#!/compare/1565481600/1567123200

https://backpack.tf/profiles/76561198103385038#!/compare/1565481600/1565740800

SCM

Sale 9:

https://backpack.tf/profiles/76561198193603311#!/compare/1565913600/1566000000

https://backpack.tf/profiles/76561198069493147#!/compare/1565913600/1566000000

Bulk

Sale 10:

https://backpack.tf/profiles/76561198069493147#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198340634356#!/compare/1566000000/1566086400

Sold for ~10 keys

Sale 11:

https://backpack.tf/profiles/76561198052043171#!/compare/1568678400/1568764800

https://backpack.tf/profiles/76561198142892266#!/compare/1568678400/1568764800

https://backpack.tf/profiles/76561198025472202#!/compare/1567641600/1568851200

enters last inv unusual, leaves first unique

Sale 12:

https://backpack.tf/profiles/76561198873699554#!/compare/1566086400/1566172800

https://backpack.tf/profiles/76561198167238310#!/compare/1563062400/1566172800

Untrace/ bulk

Sale 13:

https://backpack.tf/profiles/76561198167238310#!/compare/1563062400/1566172800

https://backpack.tf/profiles/76561198048140234#!/compare/1565568000/1566172800

Bulk

Sale 14:

https://backpack.tf/profiles/76561198048140234#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198870453692#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198044971939#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198287198615#!/compare/1566259200/1566345600

bulk and gambling

Sale 15:

https://backpack.tf/profiles/76561198878868950#!/compare/1569283200/1569369600

https://backpack.tf/profiles/76561198878820051#!/compare/1569974400/1570320000

Untrace

Sale 16 - 19:

https://marketplace.tf/items/tf2/1172;5;u3010

$24.99 / $1.83 = 13.66 keys

$22.95 / $1.83 = 12.54 keys

$24.99 / $1.82 = 13.73 keys <-- https://backpack.tf/item/6385203141

$21.99 / $1.82 = 12.08 keys <-- https://backpack.tf/item/7752006130

Bot.tf:

https://bot.tf/stats/item?def=1172&q=5&ef=Mega%20Strike&craft=1&aus=0&ks=0&source=browser_script

2 sales @ ~10 keys,

2 sales @ ~11 keys,

Total sales @:

10, 10, 11, 11, 12, 12, 13, 14, 14 keys

buyers up to ~9.5 keys,

unsolds for 13 keys for months,

calling 14 high,

keeping 10 due to seller for week + at 11,

https://bot.tf/stats/listings/MGZJE96W

Taking 10 - 13 keys.