Re-suggestion of:

https://backpack.tf/suggestion/6695314ca13c43a52803ffab

Item #1

https://backpack.tf/item/14353373455

Sale #1

Bulk/dumped to scrap:

https://backpack.tf/profiles/76561198048107278#!/compare/1714262400/1715299200

Item #2

https://backpack.tf/item/14175377200

Sale #1

Bulk/Bot transfer?:

https://backpack.tf/profiles/76561198047971773#!/compare/1713657600/1713830400

https://backpack.tf/profiles/76561198060189392#!/compare/1713657600/1713830400

Sale #2

6 keys:

https://backpack.tf/profiles/76561198060189392#!/compare/1718323200/1718409600

https://backpack.tf/profiles/76561197991111981#!/compare/1718323200/1718409600

Sale #3

Bulk/Untrace:

https://backpack.tf/profiles/76561197991111981#!/compare/1719619200/1719705600

https://backpack.tf/profiles/76561198251960730#!/compare/1719619200/1719792000

Sale #4

Bulk/Dumped to STN:

https://backpack.tf/profiles/76561198251960730#!/compare/1719792000/1719878400

https://backpack.tf/profiles/76561198383692048#!/compare/1719100800/1719792000

Sale #5

Untrace (shows only 3 keys traded on the bot's side):

https://backpack.tf/profiles/76561199564942025#!/compare/1719792000/1719878400

https://backpack.tf/profiles/76561198811307533#!/compare/1717545600/1720137600

Item #3

https://backpack.tf/item/13981693275

Sale #1

Bulk/Untrace:

https://backpack.tf/profiles/76561199577219743#!/compare/1716854400/1716940800

https://backpack.tf/profiles/76561198125791160#!/compare/1716768000/1716854400

Item #4

https://backpack.tf/item/13925951772

Sale #1

Untrace:

https://backpack.tf/profiles/76561199581722058#!/compare/1715385600/1715472000

Sale #2

5 keys:

https://backpack.tf/profiles/76561198850121720#!/compare/1718064000/1718150400

https://backpack.tf/profiles/76561198351736377#!/compare/1717977600/1718323200

Item #5

https://backpack.tf/item/13825079694

Sale #1

Bulk/Untrace:

https://backpack.tf/profiles/76561198236550520#!/compare/1713484800/1713744000

Item #6

https://backpack.tf/item/13161778844

Sale #1

Untrace:

https://backpack.tf/profiles/76561198299389365#!/compare/1720137600/1720310400

Item #7

https://backpack.tf/item/12237929950

Sale #1

Untrace:

https://backpack.tf/profiles/76561198862028218#!/compare/1715212800/1715299200

https://backpack.tf/profiles/76561198131785751#!/compare/1715212800/1715299200

Sale #2

Bulk for Time Warp Cyborg Stunt Helmet:

https://backpack.tf/profiles/76561198220098345#!/compare/1715299200/1715385600

https://backpack.tf/profiles/76561198131785751#!/compare/1715299200/1715385600

Better used there.

Item #8

https://backpack.tf/item/10947346572

Sale #1

7 keys:

https://backpack.tf/profiles/76561198950764798#!/compare/1713571200/1713744000

https://backpack.tf/profiles/76561198051011034#!/compare/1713744000/1714003200

Sale #2

Untrace:

https://backpack.tf/profiles/76561198051011034#!/compare/1715212800/1715644800

Sale #3

Bulk/Untrace/Dumped to STN:

https://backpack.tf/profiles/76561199581722058#!/compare/1715558400/1715644800

Sale #4

5 keys:

https://backpack.tf/profiles/76561199581722058#!/compare/1717891200/1717977600

https://backpack.tf/profiles/76561198143051472#!/compare/1717891200/1718064000

IDs on red's side match for the bot.

Sale #5

Not sure, gift?:

https://backpack.tf/profiles/76561198143051472#!/compare/1719792000/1719878400

https://backpack.tf/profiles/76561198150347450#!/compare/1719705600/1719878400

Item #9

https://backpack.tf/item/10797803340

Sale #1

Bulk:

https://backpack.tf/profiles/76561198127045035#!/compare/1714089600/1714435200

https://backpack.tf/profiles/76561198253483866#!/compare/1714262400/1714435200

Sale #2

Bulk/Untrace?:

https://backpack.tf/profiles/76561198253483866#!/compare/1718236800/1718582400

Item #10

https://backpack.tf/item/13047171677

Sale #1

Bulk for S. Smoking Bonk Boy:

https://backpack.tf/profiles/76561198138733245#!/compare/1715126400/1715472000

https://backpack.tf/profiles/76561198114151975#!/compare/1715385600/1715472000

Better used there.

Item #11

https://backpack.tf/item/11990156540

Sale #1

5 keys:

https://backpack.tf/profiles/76561198302639513#!/compare/1721001600/1721088000

https://backpack.tf/profiles/76561199523473683#!/compare/1720915200/1721001600

5 sales on MPTF:

https://marketplace.tf/items/tf2/31233;5;u3003

Apr 27 @ 10.99 - 10.99 / 1.65 = 6,66 =~ 6.5 keys

May 20 @ 13.99 - 13.99 / 1.65 = 8,478 =~ 8.5 keys

Jun 4 @ 13.99 - 13.99 / 1.67 = 8,377 =~ 8 keys

Jun 28 @ 12.99 - 12.99 / 1.65 = 7,872 =~ 8 keys

Jul 4 @ 12.99 - 12.99 / 1.68 = 7,732 =~ 7.5 keys

We have:

5

5

5

6

6.5

7

7.5

8

8

8.5

Taking 5 - 8.5 as per Lemons' notes.