Resuggestion, thanks to Foamy for the info!

Sale 1:

https://backpack.tf/profiles/76561198029083169#!/compare/1550707200/1550966400

Untrace

Sale 2:

https://backpack.tf/profiles/76561198063448134#!/compare/1551052800/1551312000

https://backpack.tf/profiles/76561198148836514#!/compare/1551225600/1551312000

Untrace

Sale 3:

https://backpack.tf/profiles/76561198148836514#!/compare/1551398400/1551484800

https://backpack.tf/profiles/76561198271936634#!/compare/1551398400/1551484800

Sold for Scorching Question

Use there

sale 4:

https://backpack.tf/profiles/76561198271936634#!/compare/1551484800/1551571200

https://backpack.tf/profiles/76561198165055074#!/compare/1551484800/1551571200

Sold with duped Ghastly Pride + 20 keys for HG Kong Cone(160)

Pride Mini:

https://backpack.tf/profiles/76561198168625615#!/compare/1550707200/1551139200

https://backpack.tf/profiles/76561198055622215#!/compare/1551052800/1551139200

Sold for Hot Star Crossed WW Paint

Paint Mini:

https://backpack.tf/suggestion/5c9854496780725d4d4cc8c1

Suggestion for 34 keys

Only thing usable, taking 34

Total is 106 keys

Sale 5:

https://backpack.tf/profiles/76561198165055074#!/compare/1551571200/1551744000

https://backpack.tf/profiles/76561198825241941#!/compare/1551657600/1551744000

Sold for Cool FT RL + Blizzardy Rifle + Blizzardy Kabuto(26)

Rifle Mini:

https://backpack.tf/suggestion/5c985957d3817276fb30082b

Suggestion for 54 keys

RL Mini:

https://pastebin.com/XeVKKBDE

Average of 25 keys

Total is 105 keys

Sale 6:

https://backpack.tf/profiles/76561198825241941#!/compare/1551830400/1551916800

https://backpack.tf/profiles/76561198055969370#!/compare/1551830400/1551916800

Sold for 70 keys

Sale 7:

https://backpack.tf/profiles/76561198838788284#!/compare/1552003200/1552089600

https://backpack.tf/profiles/76561198055969370#!/compare/1552003200/1552089600

Sold for Scorching Metal Drill + ~1 key in sweets

Drill Mini:

https://backpack.tf/suggestion/5c99caa76780727fae226e68

Suggestion for 67 keys

Total is 68 keys

Sale 8:

https://marketplace.tf/items/30746;5;u30

Buy order

Total sales @:

68, 70, 105, 106 keys

nothing to counter either way,

buyers up to 55 keys,

Foamy's Part:

his feels too lopsided in terms of outliers; Id probably give it the larger range.

Taking 70 - 105 keys.