Using last 2 months.

The Sale:

Sold with Nether Wisps Russian Arms Race for 7 keys + 17 ref

https://backpack.tf/profiles/76561199059632349#!/compare/1704672000/1704758400

https://backpack.tf/profiles/76561199213327798#!/compare/1704585600/1705536000

https://backpack.tf/item/7951410219

https://imgur.com/a/3KaXTz4 - Posedown listed for ~4.05 keys. Should be fine to value this sale at the B/O price, the items would've sold for their respective B/Os together.

= 4.05 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198377604946#!/compare/1702425600/1702944000

https://backpack.tf/profiles/76561198453530349#!/compare/1702339200/1702425600

https://backpack.tf/item/12864925768

Untraceable. 2 keys match.

#2

https://backpack.tf/profiles/76561198453530349#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561199111292616#!/compare/1702944000/1703030400

https://backpack.tf/item/12864925768

Untraceable

#3

https://backpack.tf/profiles/76561199111292616#!/compare/1703030400/1703116800

https://backpack.tf/profiles/76561199183171982#!/compare/1702944000/1703030400

https://backpack.tf/item/12864925768

Backpack buy

#4

https://backpack.tf/profiles/76561199039249396#!/compare/1704672000/1705276800

https://backpack.tf/profiles/76561198300153840#!/compare/1705190400/1705276800

https://backpack.tf/item/8422912446

Bulk for DBD Hound Dog

#5

https://backpack.tf/profiles/76561198853993689#!/compare/1704240000/1704931200

https://backpack.tf/profiles/76561199059632349#!/compare/1704153600/1704240000

https://backpack.tf/item/7951410219

Bulk on both ends

#6

https://backpack.tf/profiles/76561199111073161#!/compare/1703116800/1703203200

https://backpack.tf/profiles/76561199498259005#!/compare/1703203200/1703289600

https://backpack.tf/item/4033279756

Untraceable

#7

https://backpack.tf/profiles/76561199498259005#!/compare/1703462400/1703548800

https://backpack.tf/profiles/76561198142721484#!/compare/1703462400/1703548800

https://backpack.tf/item/4033279756

Untraceable

#8

https://backpack.tf/profiles/76561199010848227#!/compare/1703980800/1704672000

https://backpack.tf/profiles/76561199032721186#!/compare/1703894400/1703980800

https://backpack.tf/item/14002476759

Untraceable

#9

https://backpack.tf/profiles/76561199032721186#!/compare/1703894400/1703980800

https://backpack.tf/profiles/76561198109141608#!/compare/1703548800/1703980800

https://backpack.tf/item/14002476759

Sold for 4 keys?

Not all keys show, I manually found another.

https://backpack.tf/item/13708463586

https://backpack.tf/item/12901771006

https://backpack.tf/item/13719610358

https://backpack.tf/item/13988597667

I'm doubtful it was only 4, as it was listed at ~4.7 keys - https://imgur.com/a/2x0BbnX

However, the item re-sold to the bot later, so it doesn't matter much anyway.

#10

https://backpack.tf/profiles/76561198109141608#!/compare/1704067200/1704240000

https://backpack.tf/profiles/76561199085308746#!/compare/1704153600/1704240000

https://backpack.tf/item/14002476759

Untraceable. Continuation of #9.

This item re-sold a week ago, but still has not been scanned in an inventory. It's looking less likely that it'll end up being traceable.

https://backpack.tf/profiles/76561199085308746#!/compare/1705017600/1705104000

https://backpack.tf/item/4507659375 - unusualified

https://backpack.tf/item/4000914933 - gambled

No current sellers.

Sale at 4.05 keys.

Taking 4.05 keys flat.

https://backpack.tf/profiles/76561198129117639#!/compare/1694044800/1705708800

https://backpack.tf/profiles/76561199203680409#!/compare/1705708800/1705795200

https://backpack.tf/item/9685702339

Backpack buy.

Sellers have appeared at 3.65 keys and 3.9 keys now. Gonna wait to see what happens with them.

https://imgur.com/a/zEGrqxv

https://backpack.tf/item/9685702339

https://backpack.tf/item/4965843260