Sale 1:

https://backpack.tf/profiles/76561198081793950#!/compare/1580256000/1580342400

https://backpack.tf/profiles/76561198061353482#!/compare/1580169600/1580256000

https://backpack.tf/profiles/76561198134546405#!/compare/1580256000/1580342400

https://backpack.tf/profiles/76561198064065041#!/compare/1580169600/1580342400

https://backpack.tf/profiles/76561198075024818#!/compare/1580256000/1580428800

untrace

sale 2:

https://backpack.tf/profiles/76561198074718149#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198045232326#!/compare/1581811200/1581897600

Untrace

sale 3:

https://backpack.tf/profiles/76561198156315732#!/compare/1585872000/1586131200

https://backpack.tf/profiles/76561198083922186#!/compare/1586044800/1586131200

Sold with ~3 keys in sweets for CTFL HoC

HoC Mini:

https://backpack.tf/suggestion/5ea641808217ac6cba72605b

Suggestion for 22 keys

Total is 19 keys

https://bot.tf/stats/listings/4O96D0WQ

B/O of 19 keys

Sale 4:

https://backpack.tf/profiles/76561198083922186#!/compare/1587168000/1587254400

https://backpack.tf/profiles/76561198847267051#!/compare/1587168000/1587254400

Untrace

sale 5:

https://backpack.tf/profiles/76561198847267051#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198244962432#!/compare/1587254400/1587340800

Bulk for keys

sale 6:

https://backpack.tf/profiles/76561198244962432#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561199026086082#!/compare/1587254400/1587340800

Bulk

sale 7:

https://backpack.tf/profiles/76561199026086082#!/compare/1587254400/1587340800

https://backpack.tf/profiles/76561198172078559#!/compare/1587081600/1587340800

Sold with Negligible sweets for OF Trans(13.5)

total is 13 keys

sale 8:

https://backpack.tf/profiles/76561198172078559#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561198105345541#!/compare/1587254400/1587427200

Can trace a sweet

Sale 9:

https://marketplace.tf/items/tf2/437;5;u8

$28.5 / $1.77 = 16.10 keys

https://backpack.tf/item/320214735

Total sales@:

13, 16, 19 keys

buyers up to ~10 keys,

sellers at 17, 19 keys,

19 key unsold for months:

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

taking 13 - 16 keys.