Sale 1:

Sold for 6 keys

https://backpack.tf/profiles/76561198063658197#!/compare/1730851200/1730937600

https://backpack.tf/profiles/76561198056176130#!/compare/1730937600/1731110400

https://backpack.tf/item/9830634386

= 6 keys

Sale 2:

Sold for 6 keys

https://backpack.tf/profiles/76561197995168435#!/compare/1732406400/1732492800

https://backpack.tf/profiles/76561197967159739#!/compare/1732406400/1732492800

https://backpack.tf/item/13964702345

= 6 keys

Sale 3:

Sold for 5 keys

https://backpack.tf/profiles/76561199059160806#!/compare/1729468800/1729555200

https://backpack.tf/profiles/76561198882886230#!/compare/1729468800/1729555200

https://backpack.tf/item/12123640719

= 5 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198049804640#!/compare/1728259200/1729468800

https://backpack.tf/profiles/76561197964546925#!/compare/1729468800/1729555200

https://backpack.tf/item/15028930355

Untraceable

#2

https://backpack.tf/profiles/76561198821697958#!/compare/1729641600/1729814400

https://backpack.tf/profiles/76561198253397187#!/compare/1729814400/1730160000

https://backpack.tf/item/14997853862

Sold for Charging Catalyst Roasty Toasty.

The only other sale on the Roasty Toasty I could find is 18 at the lowest:

https://backpack.tf/profiles/76561198013864057#!/compare/1732665600/1732752000

https://backpack.tf/profiles/76561198440222692#!/compare/1732665600/1732752000

https://backpack.tf/item/12743784455

Sold with 10 keys for Galactic Flame Mannhattan Protect

https://i.imgur.com/B5IIUb1.png - Buy order at 28 on the hat.

This sale is gonna be a large outlier, especially with the 3 sales we have.

Sellers:

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

https://backpack.tf/item/12123640719 - 15 keys

Sales at:

5

6 (2x)

Taking 5-6 keys.