Item 1

https://backpack.tf/item/12800702265

Sale 1

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-03-27T19:48:26.000Z

https://backpack.tf/profiles/76561199219758482#!/compare/1679875200/1679961600

https://backpack.tf/profiles/76561198129310093#!/compare/1679875200/1679961600

No clue

Item 2

https://backpack.tf/item/12787570097

Sale 2

https://backpack.tf/profiles/76561198053811988#!/compare/1679270400/1679356800

https://backpack.tf/profiles/76561198078864424#!/compare/1679097600/1679270400

Can't match anything

Sale 3

https://backpack.tf/profiles/76561198078864424#!/compare/1679875200/1679961600

https://backpack.tf/profiles/76561198311498888#!/compare/1679875200/1679961600

21 keys

Sale 4

https://backpack.tf/profiles/76561198311498888#!/compare/1680220800/1680307200

https://backpack.tf/profiles/76561198330635661#!/compare/1678924800/1680393600

I can match ~22 keys

Item 3

https://backpack.tf/item/12092305736

Sale 5

https://backpack.tf/profiles/76561198063090000#!/compare/1672876800/1673481600

https://backpack.tf/profiles/76561199202000000#!/compare/1674086400/1674259200

Can't load seller inv, likely a bulk inv buy however

Sale 6

https://backpack.tf/profiles/76561199202000000#!/compare/1677628800/1677715200

https://backpack.tf/profiles/76561198170592539#!/compare/1676678400/1677715200

Can't match anything

Sale 7

https://backpack.tf/profiles/76561198170592539#!/compare/1678665600/1679356800

https://backpack.tf/profiles/76561199389372563#!/compare/1678752000/1678838400

That 21 key bulk doesn't match on seller side

Item 4

https://backpack.tf/item/11900170043

Sale 8

https://backpack.tf/profiles/76561199199136084#!/compare/1677974400/1678060800

https://backpack.tf/profiles/76561198972331466#!/compare/1676678400/1678320000

29 keys matches

Item 5

https://backpack.tf/item/11563766055

Sale 9

https://backpack.tf/profiles/76561198875667823#!/compare/1673049600/1676419200

https://backpack.tf/profiles/76561198145504673#!/compare/1672963200/1673136000

Can't match keys on seller's side

Item 6

https://backpack.tf/item/11266604817

Sale 10

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-03-10T22:35:02.000Z

https://backpack.tf/profiles/76561199102237820#!/compare/1678406400/1678492800

https://backpack.tf/profiles/76561198132804259#!/compare/1677628800/1678838400

Likely 31 keys, but I only see a 30 key bulk that matches

Sale 11

https://backpack.tf/profiles/76561198132804259#!/compare/1678838400/1679356800

https://backpack.tf/profiles/76561199389372563#!/compare/1679356800/1679443200

Can't load seller inv

Item 7

https://backpack.tf/item/10920743271

Sale 12

https://backpack.tf/profiles/76561197991710013#!/compare/1673481600/1674950400

https://backpack.tf/profiles/76561199186561021#!/compare/1674604800/1674864000

No clue

Sale 13

https://backpack.tf/profiles/76561199186561021#!/compare/1675123200/1675209600

https://backpack.tf/profiles/76561199202848205#!/compare/1675123200/1675209600

Probably 23 keys

Sale 14

https://backpack.tf/profiles/76561199202848205#!/compare/1675382400/1675468800

https://backpack.tf/profiles/76561198850121720#!/compare/1675468800/1675555200

Can't match anything

Sale 15

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-02-06T14:41:12.000Z

https://backpack.tf/profiles/76561198850121720#!/compare/1675555200/1675641600

https://backpack.tf/profiles/76561198283682411#!/compare/1675555200/1675641600

Untrace on buyer side

Sale 16

Bot Owner - - > Bot

Sale 17

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-02-15T12:42:15.000Z

https://backpack.tf/profiles/76561198885476573#!/compare/1676332800/1676419200

https://backpack.tf/profiles/76561198448443559#!/compare/1676419200/1677024000

25 keys

Sale 18

https://backpack.tf/profiles/76561198448443559#!/compare/1677024000/1677110400

https://backpack.tf/profiles/76561198117410968#!/compare/1676592000/1677110400

No clue

Sale 19

https://backpack.tf/profiles/76561198117410968#!/compare/1677110400/1677715200

https://backpack.tf/profiles/76561198453530349#!/compare/1677369600/1677456000

No clue

Sale 20

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-03-05T11:52:45.000Z

https://backpack.tf/profiles/76561198453530349#!/compare/1677974400/1678060800

https://backpack.tf/profiles/76561197976816113#!/compare/1677542400/1678233600

Can't match anything

Sale 21

https://backpack.tf/profiles/76561197976816113#!/compare/1678752000/1679356800

https://backpack.tf/profiles/76561198885476573#!/compare/1679184000/1679270400

No clue

Item 8

https://backpack.tf/item/10859469301

Sale 21

https://backpack.tf/profiles/76561199140525735#!/compare/1674691200/1676505600

https://backpack.tf/profiles/76561198051831054#!/compare/1671235200/1676160000

No clue

Item 9

https://backpack.tf/item/10820714350

Tradeback would be excluded anyways...

Sale 22

https://backpack.tf/profiles/76561198311498888#!/compare/1677369600/1677456000

https://backpack.tf/profiles/76561199192088525#!/compare/1677369600/1677456000

No clue

Sale 23

Bot - - > Bot Owner

Sale 24

https://marketplace.tf/items/tf2/31209;5;u198

Still listed here

Item 10

https://backpack.tf/item/10818597469

Sale 25

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-01-05T16:18:13.000Z

https://backpack.tf/profiles/76561199125443371#!/compare/1672876800/1673136000

https://backpack.tf/profiles/76561198259096033#!/compare/1673136000/1673308800

29 keys

Sale 26

https://marketplace.tf/items/tf2/31209;5;u198

I'll cover mp.tf at the end

Item 11

https://backpack.tf/item/10808473642

I'll cover mp.tf at the end

Item 12

https://backpack.tf/item/10804856059

Sale 27

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-01-27T00:08:29.000Z

https://backpack.tf/profiles/76561198885476573#!/compare/1674691200/1674777600

https://backpack.tf/profiles/76561198127016487#!/compare/1651104000/1679356800

1 for 1 with a circling heart glengarry bonnet?

Bonnet has no valid sales, they're all bulk

Item 12

https://backpack.tf/item/10754234614

Sale 28

https://gladiator.tf/time-machine?item=Viridescent%20Peeper%20Spooky%20Head-Bouncers&at=2023-03-02T09:08:57.000Z

https://backpack.tf/profiles/76561199072654974#!/compare/1677628800/1677715200

https://backpack.tf/profiles/76561198033059125#!/compare/1677628800/1677801600

Can't match anything

Item 13

https://backpack.tf/item/10745060288

Sale 29

https://backpack.tf/profiles/76561198135823981#!/compare/1674950400/1675123200

https://backpack.tf/profiles/76561199132184792#!/compare/1675036800/1675209600

~21 keys matches

Sale 30

Bot - - > Bot Owner

Sale 31

Covering all mp.tf sales together in a sec

Mp.tf

https://marketplace.tf/items/tf2/31209;5;u198

$54.99 / $1.99 = ~28 keys

$59.99 / $2.05 = ~29 keys

$59.99 / $2.03 = ~30 keys

Total Sales

21, 21, 22, 23, 25, 28, 29, 29, 29, 30, 30

29 seems like a common selling point, sellers at 27 and 28 are less than a week old as well

Taking 21 - 29 keys c: