Sale 1:

https://backpack.tf/profiles/76561198119149660#!/compare/1543449600/1543536000

https://backpack.tf/profiles/76561198073522694#!/compare/1543017600/1544054400

Bulk / gamble?

Sale 2:

https://backpack.tf/profiles/76561198073522694#!/compare/1544054400/1544140800

https://backpack.tf/profiles/76561198124069244#!/compare/1543881600/1544054400

Bulk / gamble

Sale 3:

https://backpack.tf/profiles/76561198124069244#!/compare/1544227200/1545523200

https://backpack.tf/profiles/76561198353251333#!/compare/1544054400/1544227200

Gamble

Sale 4:

https://backpack.tf/profiles/76561198353251333#!/compare/1544054400/1544227200

https://backpack.tf/profiles/76561198840748471#!/compare/1544140800/1544227200

Gamble

Sale 5:

https://backpack.tf/profiles/76561198840748471#!/compare/1544140800/1544227200

https://backpack.tf/profiles/76561198263475474#!/compare/1539129600/1544313600

Gamble/ through banned account

Sale 6:

https://backpack.tf/profiles/76561198263475474#!/compare/1539129600/1544313600

https://backpack.tf/profiles/76561198399655137#!/compare/1544140800/1544313600

Gamble

Sale 7:

https://backpack.tf/profiles/76561198399655137#!/compare/1544140800/1544313600

https://backpack.tf/profiles/76561198179253523#!/compare/1544227200/1544313600

Gamble

Sale 8:

https://backpack.tf/profiles/76561198285371555#!/compare/1545609600/1545696000

SCM

https://steamcommunity.com/market/listings/440/Unusual%20Pampered%20Pyro

30.75 or 30.73,

divided by 2.891 or 2.886,

both end up ~11 keys.

Sale 9:

https://backpack.tf/profiles/76561198285371555#!/compare/1546214400/1546300800

https://backpack.tf/profiles/76561198337734785#!/compare/1546214400/1546300800

QS

Sale 10:

https://backpack.tf/profiles/76561198337734785#!/compare/1548028800/1548115200

https://backpack.tf/profiles/76561198875470056#!/compare/1548028800/1548115200

Untrace / gamble

Sale 11:

https://backpack.tf/profiles/76561198875470056#!/compare/1548115200/1548201600

https://backpack.tf/profiles/76561198834678807#!/compare/1548028800/1548201600

Bulk/ gamble

Sale 12:

https://backpack.tf/profiles/76561198834678807#!/compare/1548288000/1548547200

https://backpack.tf/profiles/76561197998898020#!/compare/1548288000/1548374400

Untrace / QS?

Sale 13:

https://backpack.tf/profiles/76561198225715416#!/compare/1548374400/1548460800

https://backpack.tf/profiles/76561198875470056#!/compare/1548374400/1548460800

https://backpack.tf/profiles/76561198834678807#!/compare/1548288000/1548547200

https://backpack.tf/profiles/76561198882398111#!/compare/1548633600/1548720000

Gamble?

Sale 14:

https://backpack.tf/profiles/76561198120554219#!/compare/1550361600/1550448000

https://backpack.tf/profiles/76561198277409359#!/compare/1550361600/1550448000

Sold for 7 keys?

Sale 15:

https://backpack.tf/profiles/76561198277409359#!/compare/1550361600/1550448000

https://backpack.tf/profiles/76561198808612658#!/compare/1550361600/1550448000

Weird history on the Barnstormer, not using.

Sale 16:

https://backpack.tf/profiles/76561198808612658#!/compare/1550361600/1550448000

https://backpack.tf/profiles/76561198038307962#!/compare/1550361600/1550448000

Sold with ~2 keys in sweets for DBD Juju

Juju Mini:

https://backpack.tf/suggestion/5c8f51856780725b8a48ae3f

Suggestion for 15 keys

Total is 13 keys

Sale 17:

https://backpack.tf/profiles/76561198038307962#!/compare/1550361600/1550448000

https://backpack.tf/profiles/76561198269487332#!/compare/1550361600/1550448000

Sold for Blizzardy Tyrannus + ~16 ref

Tyrannus Mini:

https://backpack.tf/suggestion/5c8fcf8b6780723c9d303492

Suggestion for 12.5 keys

Total is ~13 keys

Sale 18:

https://backpack.tf/profiles/76561198269487332#!/compare/1550448000/1550534400

https://backpack.tf/profiles/76561198113899098#!/compare/1550361600/1550448000

Sold for 12 keys

Sale 19:

https://backpack.tf/profiles/76561198442870658#!/compare/1547078400/1547251200

https://backpack.tf/profiles/76561198131633162#!/compare/1547164800/1547337600

Bulk QS?

Sale 20:

https://backpack.tf/profiles/76561198131633162#!/compare/1547337600/1547424000

https://backpack.tf/profiles/76561198015384426#!/compare/1547251200/1547424000

Sold for 11 keys

Sale 21:

https://backpack.tf/profiles/76561198119149660#!/compare/1548633600/1548720000

https://backpack.tf/profiles/76561198262634558#!/compare/1548633600/1548720000

Untrace

Sale 22:

https://backpack.tf/profiles/76561198262634558#!/compare/1548720000/1548806400

https://backpack.tf/profiles/76561198053787974#!/compare/1548633600/1548720000

Not fully traceable

Sale 23:

https://marketplace.tf/items/30139;5;u6

$25.00 / $1.75 = 14.29 keys

Sale 24:

https://backpack.tf/profiles/76561198262634558#!/compare/1548633600/1548720000

https://backpack.tf/profiles/76561198312571585#!/compare/1548633600/1548720000

Sold with 1 key for KaW Gilded

Use there

Total sales @:

11, 11, 12, 13, 13, 14.29 keys

Buyers up to 10 keys,

Sellers down to 16,

11 sold relatively quick(SCM was real close to buyers),

Taking 12 - 14 keys