Sale 1:

https://backpack.tf/profiles/76561198171624643#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198431333120#!/compare/1566259200/1566345600

Sold with negligible sweets for C9 Elfin

Elfin Mini:

https://backpack.tf/suggestion/5d831f2467807264d1563911

Suggestion for 11.5 keys

Total is ~11 keys

Sale 2:

https://backpack.tf/profiles/76561198431333120#!/compare/1566432000/1566518400

https://backpack.tf/profiles/76561198368964060#!/compare/1566432000/1566518400

Sold for Bubbling Mirror(8.5)

Sale 3:

https://backpack.tf/profiles/76561198368964060#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198138105768#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198110011480#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198012537041#!/compare/1566518400/1566604800

https://backpack.tf/profiles/76561198089253101#!/compare/1566518400/1566604800

Gambling

Sale 4:

https://backpack.tf/profiles/76561198140792905#!/compare/1570924800/1571356800

https://backpack.tf/profiles/76561198196410274#!/compare/1571270400/1571356800

Sold with 1 key for G Fetti Elfin

Elfin Mini:

https://backpack.tf/suggestion/5dad5b77d38172047a3693b0

Suggestion for 10.25 keys

Total is 9.25 keys

sale 5:

https://backpack.tf/profiles/76561198276917240#!/compare/1564704000/1564790400

https://backpack.tf/profiles/76561198089253101#!/compare/1564617600/1564704000

Untrace / QS

sale 6:

https://backpack.tf/profiles/76561198045613286#!/compare/1569369600/1569456000

https://backpack.tf/profiles/76561198323565601#!/compare/1569283200/1569369600

QS

Sale 7:

https://backpack.tf/profiles/76561198432623475#!/compare/1571184000/1571270400

https://backpack.tf/profiles/76561198273681900#!/compare/1571097600/1571356800

Bulky

Sale 8:

https://marketplace.tf/items/tf2/321;5;u35

$22 / $1.82 = 12.09 keys

https://backpack.tf/item/754534430

sale 9:

https://backpack.tf/profiles/76561198196410274#!/compare/1571529600/1571616000

https://backpack.tf/profiles/76561198131391598#!/compare/1571529600/1571616000

Sold for CPS Airdog(10)

https://bot.tf/stats/listings/4PP3VORE

B/o of 9 keys, capping

Total sales @:

8.5, 9, 9.25, 11, 12, keys

11 resold for lower,

2 month unsold for 10 keys,

taking 8.5 - 9.5 keys, calling other sales high.