Sale 1:

https://backpack.tf/profiles/76561198107067824#!/compare/1550016000/1550102400

https://backpack.tf/profiles/76561198049884052#!/compare/1550016000/1550102400

Sold for 9 keys

Sale 2:

https://backpack.tf/profiles/76561198240301360#!/compare/1545955200/1547337600

https://backpack.tf/profiles/76561198148333716#!/compare/1546128000/1546473600

SCM

Sale 3:

https://backpack.tf/profiles/76561198125791160#!/compare/1549843200/1549929600

https://backpack.tf/profiles/76561198239073546#!/compare/1549929600/1550275200

Sold for 9 keys

Sale 4:

https://backpack.tf/profiles/76561198123224716#!/compare/1546041600/1546128000

https://backpack.tf/profiles/76561198856405336#!/compare/1546041600/1546387200

Sold with 2 keys for Steaming Toy

Use there

Sale 5:

https://backpack.tf/profiles/76561198308772967#!/compare/1545955200/1546041600

https://backpack.tf/profiles/76561198258961656#!/compare/1546473600/1546819200

Untrace / SCM

Sale 6:

https://backpack.tf/profiles/76561198258961656#!/compare/1547856000/1548892800

https://backpack.tf/profiles/76561198865871395#!/compare/NaN/1548892800

https://backpack.tf/profiles/76561198083778611#!/compare/1538006400/1549497600

Untrace / SCM

Sale 7:

https://backpack.tf/profiles/76561198212088520#!/compare/1541462400/1545436800

https://backpack.tf/profiles/76561198363395191#!/compare/1545350400/1545436800

QS to bot

Sale 8:

https://backpack.tf/profiles/76561198363395191#!/compare/1545955200/1546041600

https://backpack.tf/profiles/76561198090722258#!/compare/1546646400/1547164800

SCM

Sale 9:

https://backpack.tf/profiles/76561198853323946#!/compare/1547856000/1548979200

https://backpack.tf/profiles/76561198045775820#!/compare/1548374400/1548460800

SCM

Sale 10:

https://backpack.tf/profiles/76561198045775820#!/compare/1548547200/1548633600

https://backpack.tf/profiles/76561197964680820#!/compare/1542499200/1548806400

SCM

Sale 11-14:

$17.99 / $1.74 = 10.34 keys

$19.98 / $1.65 = 12.11 keys

$19.99 / $1.79 = 11.17 keys

$30.99 / $1.75 = 17.71 keys

Total sales @:

9, 9, 10.34, 11.17, 12.11, 17.71 keys

Poorly bumped seller for 9 keys,

https://backpack.tf/item/6940353717

Taking 9 - 12 keys, watching seller.