Sale 1:

Sold for 12 keys

Seller: https://backpack.tf/profiles/76561198305492646#!/compare/1552867200/1553040000

Buyer: https://backpack.tf/profiles/76561198163604506#!/compare/1552867200/1553126400

https://backpack.tf/item/619915073

X = 12

Sale 2:

Quicksold for 10 keys + more than half a key in ref

Seller: https://backpack.tf/profiles/76561198302399911#!/compare/1550880000/1550966400

Buyer: https://backpack.tf/profiles/76561198294403513#!/compare/1550880000/1550966400

https://backpack.tf/item/279147681

X = 11

Sale 3:

Sold for 9 keys + ~1 key in metal

Seller: https://backpack.tf/profiles/76561198311498888#!/compare/1550448000/1550534400

Buyer: https://backpack.tf/profiles/76561198303951257#!/compare/1550448000/1550534400

https://backpack.tf/item/279147681

X = 10

Sale 4:

Quicksold for 10 keys

Seller: https://backpack.tf/profiles/76561198143969056#!/compare/1550880000/1550966400

Buyer: https://backpack.tf/profiles/76561198302399911#!/compare/1550880000/1550966400

https://backpack.tf/item/279147681

X = 10

Sale 5:

Quicksold for 9 keys + 14 ref

Seller: https://backpack.tf/profiles/76561198100912739#!/compare/1550793600/1550880000

Buyer: https://backpack.tf/profiles/76561198369548702#!/compare/1550793600/1550880000

https://backpack.tf/item/279147681

X = 9.5

Sale 6:

Sold to a bot for 9 keys + possibly some ref

Seller: https://backpack.tf/profiles/76561198026908130#!/compare/1546128000/1546473600

Buyer: https://backpack.tf/profiles/76561198316961222#!/compare/1546387200/1546473600

https://backpack.tf/item/619915073

X = 9

Other Sales:

https://backpack.tf/item/279147681 (#1-)

#1

Untraceable

https://backpack.tf/profiles/76561198303951257#!/compare/1550534400/1550707200

https://backpack.tf/profiles/76561198140083209#!/compare/1550620800/1550707200

#2

Untraceable, sold for some amount of keys

https://backpack.tf/profiles/76561198140083209#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198100912739#!/compare/1550793600/1550880000

#3

Bulk for Death at Dusk Charmer’s

https://backpack.tf/profiles/76561198369548702#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198143969056#!/compare/1550620800/1550880000

#4

Untraceable

https://backpack.tf/profiles/76561198294403513#!/compare/1550880000/1550966400

https://backpack.tf/profiles/76561198067741299#!/compare/1550880000/1550966400

#5

Untraceable

https://backpack.tf/profiles/76561198067741299#!/compare/1550880000/1550966400

https://backpack.tf/profiles/76561198119149660#!/compare/1550880000/1550966400

#6

Untraceable

https://backpack.tf/profiles/76561198119149660#!/compare/1551398400/1551484800

https://backpack.tf/profiles/76561198067407088#!/compare/1551484800/1552089600

Sales at:

9

9.5

10 (2x)

11

12

No current sellers.

Too many quicksells to exclude here. Going to exclude the ones that match buy order prices (9 & 9.5).

Going with 10-12.