Sale 1:

untrace

https://backpack.tf/profiles/76561198173571683#!/compare/1589328000/1590537600

https://backpack.tf/profiles/76561198408606810#!/compare/1589328000/1589414400

Sale 2:

16 keys

https://backpack.tf/profiles/76561198080179568#!/compare/1591228800/1591315200

https://backpack.tf/profiles/76561198276156025#!/compare/1591228800/1591315200

Sale 3:

untrace

https://backpack.tf/profiles/76561198054270952#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561198185551353#!/compare/1568505600/1590537600

Sale 4:

untrace

https://backpack.tf/profiles/76561198144089680#!/compare/1590710400/1591228800

https://backpack.tf/profiles/76561198049098788#!/compare/1590624000/1590796800

Sale 5:

untrace, maybe gamble

https://backpack.tf/profiles/76561198049098788#!/compare/1593907200/1596240000

https://backpack.tf/profiles/76561198274142675#!/compare/1594512000/1594684800

Sale 6:

untrace, maybe gamble

https://backpack.tf/profiles/76561198274142675#!/compare/1594684800/1596240000

https://backpack.tf/profiles/76561198246096512#!/compare/1593993600/1594684800

Sale 7:

untrace, likely QS

https://backpack.tf/profiles/76561198246096512#!/compare/1594684800/1596240000

https://backpack.tf/profiles/76561198337734785#!/compare/1594598400/1594684800

Sale 8:

15 keys

https://backpack.tf/profiles/76561198359227618#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561198164036774#!/compare/1588550400/1588636800

Sale 9:

bulk

https://backpack.tf/profiles/76561198164036774#!/compare/1588636800/1588723200

https://backpack.tf/profiles/76561198418740133#!/compare/1588550400/1588723200

Sale 10:

untrace

https://backpack.tf/profiles/76561198272014381#!/compare/1589587200/1589673600

https://backpack.tf/profiles/76561198146992563#!/compare/1589587200/1589673600

Sale 11:

untrace

https://backpack.tf/profiles/76561198146992563#!/compare/1589587200/1589673600

https://backpack.tf/profiles/76561198303464488#!/compare/1589673600/1589760000

Sale 12:

15 keys

https://backpack.tf/profiles/76561198303464488#!/compare/1590883200/1590969600

https://backpack.tf/profiles/76561198090506450#!/compare/1590796800/1590969600

Sale 13:

untrace

https://backpack.tf/profiles/76561198090506450#!/compare/1591833600/1592006400

https://backpack.tf/profiles/76561198305494036#!/compare/1591747200/1591833600

Sale 14:

14 keys

https://backpack.tf/profiles/76561198305494036#!/compare/1592697600/1592784000

https://backpack.tf/profiles/76561198413058872#!/compare/1592784000/1592870400

Sale 15:

14 keys

https://backpack.tf/profiles/76561198413058872#!/compare/1592784000/1592870400

https://backpack.tf/profiles/76561198933608787#!/compare/1592697600/1592870400

Sale 16:

untrace

https://backpack.tf/profiles/76561198933608787#!/compare/1592870400/1593043200

https://backpack.tf/profiles/76561198107676964#!/compare/1592870400/1592956800

Sale 17:

untrace

https://backpack.tf/profiles/76561198145072434#!/compare/1592784000/1592956800

https://backpack.tf/profiles/76561198107676964#!/compare/1592870400/1592956800

Sale 18:

using on coldsnap

https://backpack.tf/profiles/76561198145072434#!/compare/1593388800/1593475200

https://backpack.tf/profiles/76561198211870649#!/compare/1593475200/1593561600

Sale 19:

untrace

https://backpack.tf/profiles/76561198127838231#!/compare/1593734400/1593820800

https://backpack.tf/profiles/76561198110842037#!/compare/1593648000/1593820800

Sale 20:

some amount of keys? untrace

https://backpack.tf/profiles/76561198110842037#!/compare/1593907200/1593993600

https://backpack.tf/profiles/76561198323733331#!/compare/1593907200/1593993600

Sale 21:

untrace

https://backpack.tf/profiles/76561198323733331#!/compare/1593907200/1593993600

https://backpack.tf/profiles/76561198090356748#!/compare/1593907200/1593993600

Sale 22:

15 keys

https://backpack.tf/profiles/76561198086533135#!/compare/1592956800/1594425600

https://backpack.tf/profiles/76561198090356748#!/compare/1593993600/1594080000

Sale 23:

untrace

https://backpack.tf/profiles/76561198086533135#!/compare/1594944000/1596240000

https://backpack.tf/profiles/76561198350879574#!/compare/1594684800/1595376000

=================================================================

Sales:

14,14,15,15,15,16