Sale 1:

https://backpack.tf/profiles/76561198000609315#!/compare/1582588800/1582675200

https://backpack.tf/profiles/76561198933270485#!/compare/1582502400/1582675200

https://backpack.tf/profiles/76561198355089825#!/compare/1582761600/1582848000

https://backpack.tf/profiles/76561198869102869#!/compare/1575590400/1582848000

https://backpack.tf/profiles/76561198933270485#!/compare/1582761600/1582848000

https://backpack.tf/profiles/76561198950621219#!/compare/1582761600/1582848000

https://backpack.tf/profiles/76561198087195582#!/compare/1582848000/1582934400

https://backpack.tf/profiles/76561198950621219#!/compare/1582934400/1582848000

untrace / bulk

Sale 2:

https://backpack.tf/profiles/76561198950621219#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198095894723#!/compare/1579910400/1583107200

https://backpack.tf/profiles/76561198047863952#!/compare/1583020800/1583107200

https://backpack.tf/profiles/76561198047863952#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198353677528#!/compare/1583107200/1583193600

Untrace

sale 3:

https://backpack.tf/profiles/76561198353677528#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198275012706#!/compare/1583107200/1583193600

sold for 10 keys

sale 4:

https://backpack.tf/profiles/76561198275012706#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198146259385#!/compare/1583107200/1583193600

sold with negligible sweets for 11 keys

sale 5:

https://backpack.tf/profiles/76561198146259385#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561198133820283#!/compare/1583107200/1583193600

sold for keys, can trace 5

Sale 6:

https://backpack.tf/profiles/76561198133820283#!/compare/1583107200/1583193600

https://backpack.tf/profiles/76561198151085180#!/compare/1583107200/1583193600

Sold with ~4 keys for PE Warming

Warming Mini:

https://backpack.tf/suggestion/5ea63e4eae57a874034da1bb

Suggestion for 18 keys

Total is 14 keys

https://bot.tf/stats/listings/MXQ3LWP6

B/O of 16 keys

Sale 7:

https://backpack.tf/profiles/76561198151085180#!/compare/1583193600/1583280000

https://backpack.tf/profiles/76561198081787690#!/compare/1582934400/1583280000

Sold for ~12 keys

Sale 8:

https://backpack.tf/profiles/76561198081787690#!/compare/1583280000/1583798400

https://backpack.tf/profiles/76561198986633877#!/compare/1583280000/1583366400

https://backpack.tf/profiles/76561198037674114#!/compare/1583884800/1583107200

https://backpack.tf/profiles/76561198020673987#!/compare/1587081600/1587254400

Untrace

sale 9:

https://marketplace.tf/items/tf2/309;5;u30;strange

$31 / $1.70 = 18.24 keys <--- https://backpack.tf/item/847200478

Total sales @:

10, 11, 12, 14, 18 keys

buyers up to 11 keys,

seller at 16 keys:

https://i.imgur.com/Xx8dBr8.jpg

unsold for 2 months,

taking 12 - 14 keys.