Skipping all bots - cs.deals, tf2mart, tradeit.gg

As well as scammers tradebacks everything that's unusable on sight

https://backpack.tf/item/623909045

https://backpack.tf/item/700354374

https://backpack.tf/item/828751037

https://backpack.tf/item/801598209

https://backpack.tf/item/1184099862

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https://backpack.tf/profiles/76561198020235082#!/compare/1581379200/1581465600

https://backpack.tf/profiles/76561198374153931#!/compare/1580688000/1581465600

Untraceable

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https://backpack.tf/profiles/76561198230732648#!/compare/1581724800/1581811200

https://backpack.tf/profiles/76561198130392225#!/compare/1581465600/1581811200

Untraceable

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https://mannco.store/item/17659

https://backpack.tf/item/623909045

$14.50 = 8.8 keys

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https://backpack.tf/profiles/76561198114673960#!/compare/1581897600/1582243200

https://backpack.tf/profiles/76561198040146867#!/compare/1564272000/1581897600

Untraceable

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https://backpack.tf/profiles/76561198114673960#!/compare/1585094400/1585353600

https://backpack.tf/profiles/76561198838788284#!/compare/1585094400/1585180800

Bulk

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https://backpack.tf/profiles/76561198838788284#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198107344329#!/compare/1585267200/1585353600

Untraceable, but the sale has been confirmed in the comments of this suggestion:

https://backpack.tf/suggestion/5e7d57da5334995d61144f4c

https://gyazo.com/71e364b2d2d20414e3ddd1cfdb5e6a6d

4 Critical Kills Parts (4 keys) + Scooty Scoot (1.4 keys) + Tour of Duty Ticket (.5 keys) minus 3 refined = Pretty much 6 keys

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https://marketplace.tf/items/tf2/647;11;uncraftable

$15.00 = 8.8 keys

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https://marketplace.tf/items/tf2/647;11;uncraftable

Current seller for $12.99 = ~7.7 keys

Sales:

6

8.8

8.8

Seller at 7.7

Going with 6-8.8