Resuggestion due to new sales!

Sale 1:

https://backpack.tf/profiles/76561198114083902#!/compare/1542585600/1547078400

https://backpack.tf/profiles/76561198113188320#!/compare/1542499200/1542585600

Sold for keys?

Sale 2:

https://backpack.tf/profiles/76561198113188320#!/compare/1542672000/1542844800

https://backpack.tf/profiles/76561198094126723#!/compare/1542758400/1542844800

Sold for 16 keys

Sale 3:

https://backpack.tf/profiles/76561198267226056#!/compare/1542585600/1542758400

https://backpack.tf/profiles/76561198114083902#!/compare/1542585600/1547078400

Sold for spell

Sale 4:

https://backpack.tf/profiles/76561198021055079#!/compare/1546819200/1546905600

https://backpack.tf/profiles/76561198134058742#!/compare/1546819200/1546905600

Sold for 17 keys

Sale 5:

https://backpack.tf/profiles/76561198134058742#!/compare/1547251200/1547337600

https://backpack.tf/profiles/76561198192602363#!/compare/1547251200/1547337600

Sold for keys?

Sale 6:

https://backpack.tf/profiles/76561198080179568#!/compare/1542758400/1542844800

https://backpack.tf/profiles/76561198345220782#!/compare/1542844800/1543104000

Sold for 16 keys

Sale 7:

https://backpack.tf/profiles/76561198345220782#!/compare/1543104000/1543363200

https://backpack.tf/profiles/76561198009872161#!/compare/1541808000/1549929600

Untrace

Sale 8:

https://backpack.tf/profiles/76561198060431832#!/compare/1545004800/1545091200

https://backpack.tf/profiles/76561198026129220#!/compare/1545004800/1545091200

Untrace

Sale 9 - 11:

https://marketplace.tf/items/105;5;u30

$17.2 / $1.65 = 10.42 keys

$27.98 / $1.76 = 15.90 keys

$36.63 / $1.77 = 20.69 keys

Sale 12:

https://backpack.tf/profiles/76561198021055079#!/compare/1542240000/1542326400

https://backpack.tf/profiles/76561198836307397#!/compare/1542240000/1542326400

Sold for keys

Sale 13:

https://backpack.tf/profiles/76561198836307397#!/compare/1542326400/1546041600

https://backpack.tf/profiles/76561197999873164#!/compare/1542931200/1543017600

Keys?

Sale 14:

https://backpack.tf/profiles/76561198806095523#!/compare/1546905600/1546992000

https://backpack.tf/profiles/76561198305494036#!/compare/1546905600/1546992000

Sold to bot

Sale 15:

https://backpack.tf/profiles/76561198305494036#!/compare/1546992000/1547078400

https://backpack.tf/profiles/76561198309731813#!/compare/1546992000/1547078400

Sold for 18 keys

Sale 16:

https://backpack.tf/profiles/76561198309731813#!/compare/1549756800/1549929600

https://backpack.tf/profiles/76561198173088631#!/compare/1549238400/1549929600

Untrace

Sale 17:

https://backpack.tf/profiles/76561198173088631#!/compare/1549929600/1550016000

https://backpack.tf/profiles/76561198876584040#!/compare/1549929600/1550016000

Sold for CTFL Noir

Sale 18:

https://backpack.tf/profiles/76561198876584040#!/compare/1549929600/1550016000

https://backpack.tf/profiles/76561198192602363#!/compare/1549843200/1550016000

Keys

Total sales @:

10.42, 15.90, 16, 16, 17, 20.69 keys

Seller at 20 keys,

Buyers up to 16 keys

considering sales ~16, and that 16 & 17 did not happen quick,

gonna exclude 20.69 as a outlier,

taking 17 - 18 keys