Sale 1:

https://backpack.tf/profiles/76561198172063670#!/compare/1550275200/1550534400

https://backpack.tf/profiles/76561198448207173#!/compare/1550448000/1550534400

QS to bot(~12.5)

Sale 2:

https://backpack.tf/profiles/76561198448207173#!/compare/1551657600/1551916800

https://backpack.tf/profiles/76561198375430785#!/compare/1551830400/1551916800

Sold for ~14 keys

Sale 3:

https://backpack.tf/profiles/76561198375430785#!/compare/1551830400/1551916800

https://backpack.tf/profiles/76561198176131425#!/compare/1551830400/1551916800

Sold for CTFL Brass Bucket

https://bot.tf/stats/listings/4EQ02N64

B/O of 17 keys

Use there

Sale 4:

https://backpack.tf/profiles/76561198176131425#!/compare/1551830400/1551916800

https://backpack.tf/profiles/76561198337734785#!/compare/1551830400/1551916800

QS

Sale 5:

https://backpack.tf/profiles/76561198337734785#!/compare/1553731200/1553817600

https://backpack.tf/profiles/76561198306945757#!/compare/1553731200/1553817600

Untrace

Sale 6:

https://backpack.tf/profiles/76561198208582767#!/compare/1555027200/1555113600

https://backpack.tf/profiles/76561198243742166#!/compare/1555027200/1555113600

https://backpack.tf/profiles/76561198135492876#!/compare/1555027200/1555113600

https://backpack.tf/profiles/76561198332839477#!/compare/1555027200/1555113600

Untrace

Sale 7:

https://backpack.tf/profiles/76561198332839477#!/compare/1555113600/1555200000

https://backpack.tf/profiles/76561198050002064#!/compare/1555113600/1555200000

Sold for 14 keys

Sale 8:

https://backpack.tf/profiles/76561198050002064#!/compare/1555200000/1555286400

https://backpack.tf/profiles/76561198940409358#!/compare/1555200000/1555286400

Sold for ~13 keys in sweets

Sale 9:

https://backpack.tf/profiles/76561198940409358#!/compare/1555200000/1555286400

https://backpack.tf/profiles/76561198375808658#!/compare/1555286400/1555632000

Keys...

Sale 10:

https://backpack.tf/profiles/76561198375808658#!/compare/1555286400/1555632000

https://backpack.tf/profiles/76561198043338415#!/compare/1555286400/1555372800

Sold for Steaming Lucky(14) + negligible sweets

Sale 11:

https://backpack.tf/profiles/76561198043338415#!/compare/1555891200/1555977600

https://backpack.tf/profiles/76561198273492951#!/compare/1555718400/1555977600

Sold for KaW Aviator + 2 keys

Aviator Mini:

https://backpack.tf/suggestion/5cd8d1b967807236fd2aefe3

Suggestion for 15.5 keys

Total is 17.5 keys

B/O of 17 keys, capping

https://bot.tf/stats/listings/4Z51WWDM

Sale 12:

https://backpack.tf/profiles/76561198273492951#!/compare/1555977600/1556323200

https://backpack.tf/profiles/76561198049638059#!/compare/1556236800/1556323200

Bulk

Sale 13:

https://backpack.tf/profiles/76561198049638059#!/compare/1556409600/1556496000

https://backpack.tf/profiles/76561198038826078#!/compare/1556409600/1556496000

Sold for Blizzardy Helm(16)

Sale 14:

https://backpack.tf/profiles/76561198038826078#!/compare/1556755200/1556841600

https://backpack.tf/profiles/76561198337734785#!/compare/1556755200/1556841600

QS(~13 keys)

Sale 15, 16:

https://marketplace.tf/items/344;5;u11

buy order

$29.99 / $1.8 = 16.66 keys

$29.99 / $1.77 = 16.94 keys

Sales @:

12.5, 13, 13, 14, 14, 14, 16, 16.66, 16.94, 17 keys

Buyers up to ~14 keys,

Taking 14 - 17 keys. too many low sales to ignore.