Item 1

https://backpack.tf/item/12179502033

Sale #1:

https://backpack.tf/profiles/76561198112590124#!/compare/1729123200/1729209600

https://backpack.tf/profiles/76561198161711912#!/compare/1729123200/1729209600

sale of pro ks strange original + cats, unclear which for how much ??

Item 2

https://backpack.tf/item/11452744987

Sale #2:

https://backpack.tf/profiles/76561198122604075#!/compare/1735171200/1735344000

https://backpack.tf/profiles/76561198045687448#!/compare/1735344000/1735430400

ton of spelled items unusual and some keys

Item 3

https://backpack.tf/item/13615195059

Sale #3:

https://backpack.tf/profiles/76561198138733245#!/compare/1728950400/1729036800

https://backpack.tf/profiles/76561198068640262#!/compare/1728864000/1728950400

110 keys + Scorching Flames Swagman's Swatter, unusable since no usable sales for swatter

Sale #4:

https://backpack.tf/profiles/76561198068640262#!/compare/1733184000/1733270400

https://backpack.tf/profiles/76561198034765990#!/compare/1729123200/1733443200

used for duped It's a Secret to Everybody Brown Bomber

Item 4

https://backpack.tf/item/14568233840

Sale #5:

https://backpack.tf/profiles/76561198161711912#!/compare/1733529600/1734220800

https://backpack.tf/profiles/76561198132800444#!/compare/1734134400/1734220800

500 keys

Item 5

https://backpack.tf/item/10231626256

Sale #6:

https://backpack.tf/profiles/76561197982127154#!/compare/1733184000/1733270400

https://backpack.tf/profiles/76561198155841915#!/compare/1733184000/1733270400

used with 41 keys to buy Wicked Wick Gauzed Gaze, better used there

Item 6

https://backpack.tf/item/7215689290

mannco transfer and mp.tf sale?

https://marketplace.tf/items/tf2/30706;11

800/1.88 = 425.53 = 426 keys

Item 7

https://backpack.tf/item/6316387542

Sale #7:

https://backpack.tf/profiles/76561198247307172#!/compare/1729296000/1729382400

https://backpack.tf/profiles/76561198134214128#!/compare/1729296000/1729382400

dump to scrap tf for 278 keys + strange construction PDA(105) = 383

low

Sale #8:

https://backpack.tf/profiles/76561198134214128#!/compare/1729555200/1729641600

https://backpack.tf/profiles/76561198045749377#!/compare/1729555200/1729641600

untrace

Sale #9:

https://backpack.tf/profiles/76561198045749377#!/compare/1729555200/1729641600

https://backpack.tf/profiles/76561198162120088#!/compare/1729382400/1729641600

used for spellbound pencil pusher, better used there

Item 8

https://backpack.tf/item/4297472858

Sale #10:

https://backpack.tf/profiles/76561198072173048#!/compare/1728086400/1728172800

https://backpack.tf/profiles/76561198063640894#!/compare/1728086400/1728172800

???

Sale #11:

https://backpack.tf/profiles/76561198063640894#!/compare/1729555200/1729641600

https://backpack.tf/profiles/76561198028970071#!/compare/1729555200/1729641600

1:1 for Frostbite Das Hazmattenhatten(?)

Sale #12:

https://backpack.tf/profiles/76561198028970071#!/compare/1732579200/1732752000

https://backpack.tf/profiles/76561198336662358#!/compare/1732665600/1732752000

sale for Sunbeams Baseball Bill's Sports Shine + Scorching Flames Scout Shako + Smoking Federal Casemaker

I don't think it's possible to price this off of this

Item 9

https://backpack.tf/item/4300288890

Sale #13:

https://backpack.tf/profiles/76561198132741569#!/compare/1734825600/1734912000

https://backpack.tf/profiles/76561198970897660#!/compare/1734739200/1734912000

sale for 73 keys + Delightful Doves Blast Defense + Cool Team Serviced War Paint (Factory New) + Strange Searing Plasma Millennial Mercenary + Strange Shooting Star + Pastel Trance Taunt: Mannrobics

Sale #14:

https://backpack.tf/profiles/76561198970897660#!/compare/1734912000/1735171200

https://backpack.tf/profiles/76561198234393468#!/compare/1734652800/1735084800

christmas gift :O

Item 10

https://backpack.tf/item/13761335577

Sale #15:

https://backpack.tf/profiles/76561198043465434#!/compare/1729987200/1730160000

https://backpack.tf/profiles/76561198273672517#!/compare/1730073600/1730160000

bought for Treasure Trove Blast Defense + 350 keys = 520 keys

https://backpack.tf/suggestion/6775aac56fa2d15abd044826

Sale #16:

https://backpack.tf/profiles/76561198273672517#!/compare/1730160000/1730246400

https://backpack.tf/profiles/76561198106100852#!/compare/1730160000/1730246400

Strange Catastrophic Companions + Hat of Undeniable Wealth and Respect + 211 keys used for Harvest Moon Nasty Norsemann, better used there

Sale #17:

https://backpack.tf/profiles/76561198106100852#!/compare/1733356800/1733443200

https://backpack.tf/profiles/76561198107783989#!/compare/1733270400/1733443200

Burning Flames A Rather Festive Tree + Strange Festivized Australium Rocket Launcher + 334 keys + 105 ref

Sale #18:

https://backpack.tf/profiles/76561198199284954#!/compare/1733702400/1733788800

https://backpack.tf/profiles/76561198140559064#!/compare/1733443200/1733788800

420 pure (below B/O)

Sale #19:

https://backpack.tf/profiles/76561198140559064#!/compare/1734739200/1734912000

https://backpack.tf/profiles/76561198055421322#!/compare/1733875200/1735084800

?? keys don't match but maybe 422

current B/O = 425 keys

current S/0 = 500 keys