Sale 1:

https://backpack.tf/profiles/76561198125791160#!/compare/1572307200/1572393600

https://backpack.tf/profiles/76561198320546709#!/compare/1572393600/1572566400

Sold for 6 keys

sale 2:

https://backpack.tf/profiles/76561198363395191#!/compare/1571702400/1571788800

https://backpack.tf/profiles/76561198184537462#!/compare/1571702400/1571788800

Sold for 6 keys

sale 3:

https://backpack.tf/profiles/76561198184537462#!/compare/1571788800/1571875200

https://backpack.tf/profiles/76561198812539185#!/compare/1571788800/1571875200

Keys or hat, can't tell...

sale 4:

https://backpack.tf/profiles/76561198812539185#!/compare/1571875200/1572220800

https://backpack.tf/profiles/76561198367816851#!/compare/1572134400/1572220800

Sold for ~7.5 keys in sweets

sale 5:

https://backpack.tf/profiles/76561198367816851#!/compare/1572134400/1572220800

https://backpack.tf/profiles/76561198198986093#!/compare/1572134400/1572220800

Sold for Thunder Fubar + Void Headcase

Headcase Mini:

https://backpack.tf/suggestion/5dd9c2acd3817269da77d859

Suggestion for 5 keys

high by buyers on the Fubar. (9 keys minimum, with 2 month unsold s at ~7.5)

sale 6:

https://backpack.tf/profiles/76561198198986093#!/compare/1572134400/1572220800

https://backpack.tf/profiles/76561198080179568#!/compare/1572220800/1572307200

QS

sale 7:

https://backpack.tf/profiles/76561198080179568#!/compare/1573862400/1573948800

https://backpack.tf/profiles/76561198148329985#!/compare/1573776000/1573948800

Sold for ~6.5 keys

Sale 8:

https://backpack.tf/profiles/76561198994679597#!/compare/1574294400/1574380800

https://backpack.tf/profiles/76561198380648009#!/compare/1574208000/1574294400

https://backpack.tf/profiles/76561198880237311#!/compare/1574121600/1574380800

Untrace

sale 9:

https://backpack.tf/profiles/76561198443171569#!/compare/1571443200/1572912000

https://backpack.tf/profiles/76561198187975443#!/compare/1571443200/1571529600

Untrace

sale 10:

https://backpack.tf/profiles/76561198187975443#!/compare/1571443200/1571529600

https://backpack.tf/profiles/76561198080179568#!/compare/1571443200/1571529600

QS

Sale 11:

https://backpack.tf/profiles/76561198390058204#!/compare/1573171200/1573257600

https://backpack.tf/profiles/76561198416405381#!/compare/1573171200/1573257600

Bulk

Sale 12:

https://backpack.tf/profiles/76561198416405381#!/compare/1573516800/1573603200

https://backpack.tf/profiles/76561198155110999#!/compare/1573516800/1573603200

QS

sale 13, 14:

https://marketplace.tf/items/tf2/30984;5;u60

$15 / $1.82 = 8.24 keys

$17 / $1.81 = 9.39 keys

Sale 15:

https://backpack.tf/profiles/76561198341171690#!/compare/1573171200/1573257600

https://backpack.tf/profiles/76561198331192139#!/compare/1573084800/1573257600

Sold for 7 keys

Total sales @:

6, 6, 6.5, 7, 7.5, 8, 9.5 keys

buyers up to ~6 keys,

sellers at ~7.5 keys,

https://i.imgur.com/vyVGuqB.jpg

unsold for 2 months,

calling 6 low,

8 high,

taking 6.5 - 7.5 keys.