Challenge 19, Team F.L.A.M.B.E.S!

15th suggestion, made by Mikey!

Marketplace Sales:

https://marketplace.tf/items/tf2/1117;5;u3015

1:

Can't find item history.

Apr 19th - $10.40

Quicksell / below buy orders.

2:

Can't find item history.

Apr 21st - $15.50

Keys were $1.79 that day, so 15.5 / 1.79 = 8.7 keys, rounding to 8.5.

3:

Can't find item history.

Apr 24th - $15.50

Keys were $1.80 that day, so 15.5 / 1.8 = 8.6 keys, rounding to 8.5.

4:

Can't find item history.

June 6th - $36.00

Huge outlier / Many sell orders on classifieds much lower than this.

Other Sales:

5:

https://backpack.tf/profiles/76561198053292336#!/compare/1592524800/1592697600

https://backpack.tf/profiles/76561198824823986#!/compare/1592524800/1592611200

Bulk / Untrace

Summary of Sales:

2 @ 8.5 keys

Classifieds: 3 sellers @ 10-10.5 keys, listings up for several days.

Taking 8.5 keys.