Sale 1

https://backpack.tf/profiles/76561198331167728#!/compare/1549756800/1549843200

https://backpack.tf/profiles/76561198256438505#!/compare/1549670400/1549843200

Sold for a Orbiting Fire Front Runner (23), Vivid Plasma Brass Bucket (30) + 2 Keys in Sweets

= 55 Keys.

Mini Front Runner:

https://marketplace.tf/items/760;5;u33

Sold on the 20th January for 44$ (1.75)

= 25.14 Keys, rounding to 25.

You should probably do a range with the seller at 21 but a full mini would work better to make it more accurate.

Sale 2

https://backpack.tf/profiles/76561198254285639#!/compare/1548288000/1548374400

https://backpack.tf/profiles/76561198331167728#!/compare/1548288000/1548374400

Sold for a circling Peace Sign Headwarmer (32) + Miami Nights Headwarmer (33)

= 65 Keys

Mini Miami Nights Headwarmer:

https://marketplace.tf/items/644;5;u61

Sold on the 16th December for 59.99$ (1.65)

= 36.35 Keys, rounding to 36 Keys.

https://backpack.tf/profiles/76561198348057478#!/compare/1547683200/1547769600

https://backpack.tf/profiles/76561198063905981#!/compare/1547683200/1547769600

Sold for ~30 Keys.

30-36 would probably work here (again, a full suggestion would be better)

Mini CPS Headwarmer:

https://backpack.tf/profiles/76561198157176919#!/compare/1549929600/1550016000

https://backpack.tf/profiles/76561198310750043#!/compare/1549843200/1550016000

Sold with a Steaming Headwarmer (14) + 16 Keys for a MG Fed Fightin Fedora (62)

= 32 Keys.

32 flat would probably work here, full suggestion would be better tho (again) + sale is pretty bulky

Micro Headwarmer:

https://backpack.tf/profiles/76561198310750043#!/compare/1550016000/1550102400

Sold for 14 Pure

Sale 3

https://backpack.tf/profiles/76561198073438708#!/compare/1544832000/1544918400

https://backpack.tf/profiles/76561198254285639#!/compare/1544918400/1545004800

Sold for a Miami Nights Chapeau (35) , Smoking Modest Pile of Scrap (18) and 4 Keys

= 56 Keys

Mini Chapeau:

https://backpack.tf/profiles/76561198073438708#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198107219183#!/compare/1550793600/1550880000

Sold for 35 Pure

https://backpack.tf/profiles/76561198114402400#!/compare/1544227200/1544400000

https://backpack.tf/profiles/76561198254285639#!/compare/1544400000/1544486400

Sold in bulk for a Arcana Rotation Sensation

Sales we got now: 55,55,56, 65

I'd call 65 an outlier because the other sales are so close together. I think 55 flat will work here