Sale 1:

https://backpack.tf/profiles/76561198892045560#!/compare/1566691200/1566777600

https://backpack.tf/profiles/76561198118166216#!/compare/1566691200/1566777600

Untraceable

Sale 2:

https://backpack.tf/profiles/76561198118166216#!/compare/1566777600/1566864000

https://backpack.tf/profiles/76561198367816851#!/compare/1566777600/1566864000

Sold for spells

Minigun Mini:

https://backpack.tf/profiles/76561198061890230#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198026360445#!/compare/1567123200/1567209600

Sold for 1 key

Tunic Mini:

https://backpack.tf/profiles/76561197992553711#!/compare/1566950400/1567036800

https://backpack.tf/profiles/76561198051050346#!/compare/1566950400/1567036800

Sold for 2 keys

Flamethrower

https://backpack.tf/profiles/76561198393648867#!/compare/1566000000/1566777600

https://backpack.tf/profiles/76561198367816851#!/compare/1566691200/1566777600

Sold for ~1.5 keys in sweets

Total is 4.5 keys

Sale 3:

https://backpack.tf/profiles/76561198367816851#!/compare/1566777600/1566864000

https://backpack.tf/profiles/76561198879393761#!/compare/1566777600/1566864000

Sold for 7 keys

Sale 4:

https://backpack.tf/profiles/76561198879393761#!/compare/1566864000/1567382400

https://backpack.tf/profiles/76561198337734785#!/compare/1567296000/1567382400

QS

Sale 5:

https://backpack.tf/profiles/76561198259456855#!/compare/1565913600/1566000000

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

Sold for 5 keys

Sale 6:

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

https://backpack.tf/profiles/76561198420103039#!/compare/1565827200/1566000000

Sold for CPS Bloke

use there

Sale 7:

https://backpack.tf/profiles/76561198420103039#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198004952793#!/compare/1565913600/1566000000

https://backpack.tf/item/7956210402

Sold with 1 key in sweets for DP Glove

Glove Mini:

https://backpack.tf/suggestion/5d81828467807245e54440e9

Suggestion for 8.25 keys

Total is 9.25 keys

Sale 8:

https://backpack.tf/profiles/76561198133616658#!/compare/1565913600/1566000000

https://backpack.tf/profiles/76561198884449271#!/compare/1565913600/1566000000

Sold with 3 keys for Aces Hermes

use there

Sale 9:

https://backpack.tf/profiles/76561198884449271#!/compare/1566000000/1566604800

https://backpack.tf/profiles/76561198256998558#!/compare/1566000000/1566086400

QS?

Sale 10:

https://marketplace.tf/items/tf2/30016;5;u56'

$19.99 / $1.82 = 10.98 keys

https://backpack.tf/item/7955544181

Total sales @:

4.5, 5, 7, 9.25, 10.98 keys

Buyers up to ~6 keys,

Seller at 9 keys,

taking 7 - 11 keys,

conserving around unsold.