Sale 1:

https://backpack.tf/profiles/76561198034732229#!/compare/1562025600/1562112000

https://backpack.tf/profiles/76561198403182852#!/compare/1561939200/1562025600

Sold for 15 Keys

sale 2:

https://backpack.tf/profiles/76561198403182852#!/compare/1562025600/1562112000

https://backpack.tf/profiles/76561198414308237#!/compare/1562025600/1562112000

Sold for 13 keys

Sale 3:

https://backpack.tf/profiles/76561198414308237#!/compare/1562025600/1562112000

https://backpack.tf/profiles/76561198152314843#!/compare/1562025600/1562112000

Sold for Aces Kiss King

https://bot.tf/stats/listings/4W73EOXY

B/O of 15.5 keys

Sale 4:

https://backpack.tf/profiles/76561198152314843#!/compare/1562025600/1562112000

https://backpack.tf/profiles/76561198119161228#!/compare/1561680000/1562112000

Sold with ~1 key for Aces Crasher

Crasher Mini:

https://backpack.tf/suggestion/5d8e68dcd38172551251b3a1

Suggestion for 13 keys

Total is 12 keys

Sale 5:

https://backpack.tf/profiles/76561198119161228#!/compare/1567468800/1567814400

https://backpack.tf/profiles/76561198306288794#!/compare/1567728000/1567814400

Bulk

Sale 6:

https://backpack.tf/profiles/76561198307719877#!/compare/1546387200/1564099200

https://backpack.tf/profiles/76561198337734785#!/compare/1564012800/1564099200

Untrace

Sale 7:

https://backpack.tf/profiles/76561198392977899#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198337734785#!/compare/1565913600/1566000000

QS

Sale 8:

https://backpack.tf/profiles/76561198153818314#!/compare/1564012800/1564099200

https://backpack.tf/profiles/76561198253961508#!/compare/1561507200/1564185600

Untrace

Sale 9:

https://backpack.tf/profiles/76561198253961508#!/compare/1565654400/1566000000

https://backpack.tf/profiles/76561198256998558#!/compare/1565913600/1566000000

QS?

Sale 10:

https://backpack.tf/profiles/76561198256998558#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198050518375#!/compare/1566000000/1566086400

Sold for 9 Keys

Sale 11:

https://backpack.tf/profiles/76561198039731024#!/compare/1569024000/1569110400

https://backpack.tf/profiles/76561198432461884#!/compare/1568937600/1569024000

https://backpack.tf/profiles/76561198973894950#!/compare/1569024000/1569110400

https://backpack.tf/profiles/76561198154782261#!/compare/1569110400/1569196800

https://backpack.tf/profiles/76561198337734785#!/compare/1569110400/1569196800

Gambling then QS

Sale 12, 13:

https://marketplace.tf/items/tf2/319;5;u60

$18 / $1.82 = 9.89 keys <-- https://backpack.tf/item/4869937988

$18.1 / $1.82 = 9.95 keys <-- https://backpack.tf/item/7957125362 | https://bot.tf/stats/listings/MXQVXZP7 B/O of 12 keys

total sales @:

9, 9.89, 9.95, 12, 13, 15 keys

Buyers up to ~8.5 keys,

seller at 12 keys is a ghost listing : https://backpack.tf/item/7957125362

sellers at 11 keys aging,

calling 9 low,

15 high,

taking 10 - 13 keys