Sale 1:

https://backpack.tf/profiles/76561198043840431#!/compare/1557273600/1557360000

https://backpack.tf/profiles/76561198151083393#!/compare/1557273600/1557360000

Untrace

Sale 2:

https://backpack.tf/profiles/76561198825432603#!/compare/1552262400/1552694400

https://backpack.tf/profiles/76561198161481285#!/compare/1552262400/1552348800

Sold for Haunted Medimedes(~6.5)

Sale 3:

https://backpack.tf/profiles/76561198161481285#!/compare/1552262400/1552348800

https://backpack.tf/profiles/76561198287076975#!/compare/1552262400/1552348800

Sold for Bubbling Tavish

Tavish Mini:

https://backpack.tf/suggestion/5cd52e486780723d6635bb19

Suggestion for 12 keys

Sale 4:

https://backpack.tf/profiles/76561198287076975#!/compare/1553385600/1554163200

https://backpack.tf/profiles/76561198172388346#!/compare/1553299200/1553385600

Sold with negligible sweets for SGG Box Trot

would end up under buyers here, use there

Sale 5:

https://backpack.tf/profiles/76561198172388346#!/compare/1553385600/1553472000

https://backpack.tf/profiles/76561198263687604#!/compare/1553385600/1553472000

Sold for ~9 keys in sweets

Sale 6:

https://backpack.tf/profiles/76561198263687604#!/compare/1553385600/1553472000

https://backpack.tf/profiles/76561198181484402#!/compare/1553385600/1553472000

Sold for DP Gridiron(7.75)

Sale 7:

https://backpack.tf/profiles/76561198181484402#!/compare/1553472000/1553644800

https://backpack.tf/profiles/76561198341171690#!/compare/1553644800/1553731200

Untrace

Sale 8:

https://backpack.tf/profiles/76561198341171690#!/compare/1553817600/1553904000

https://backpack.tf/profiles/76561198300633040#!/compare/1553817600/1553904000

Sold for keys..

Sale 9:

https://backpack.tf/profiles/76561198354325293#!/compare/1552176000/1553990400

https://backpack.tf/profiles/76561198449307015#!/compare/1553731200/1553990400

Sold for Infernal Flames Desire

Use there

Sale 10:

https://backpack.tf/profiles/76561198449307015#!/compare/1553731200/1553990400

https://backpack.tf/profiles/76561198337734785#!/compare/1553904000/1553990400

QS

Sale 11:

https://marketplace.tf/items/313;5;u60

$18.00 / $1.79 = 10.06 keys

Sale 12:

https://bot.tf/stats/item?def=313&q=5&ef=Dead%20Presidents&craft=1&aus=0&ks=0

Sold for 8 keys

Total sales @:

6.5, 7.75, 8, 9, 10.06, 12 keys

Buyers up to ~7 keys,

Taking 8 - 10 keys,

calling 12 outlier based on the fact the buyer for 12 resold for lower later on...