Forgot about this one, resuggesting, thank you K1ng and Manaos!

Sold with Purple Energy Antarctic Eyewear for Burning Flames Frenchman's Beret + 1 key + Circling Heart Head Hedge

https://backpack.tf/profiles/76561198207199727#!/compare/1584662400/1584835200

https://backpack.tf/profiles/76561198061779536#!/compare/1584748800/1584835200

Bulk, not using

Sold for 44 keys

https://backpack.tf/profiles/76561198176734455#!/compare/1583280000/1583884800

https://backpack.tf/profiles/76561198147857818#!/compare/1583798400/1583884800

Bulk

https://backpack.tf/profiles/76561198254882979#!/compare/1584921600/1585008000

https://backpack.tf/profiles/76561198147857818#!/compare/1584921600/1585008000

Looks like bulk

https://backpack.tf/profiles/76561198254882979#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198118157202#!/compare/1585094400/1585180800

Unknown

https://backpack.tf/profiles/76561198819747735#!/compare/1585526400/1585612800

https://backpack.tf/profiles/76561198305494036#!/compare/1585526400/1585612800

Sold for 29 keys

https://backpack.tf/profiles/76561198305494036#!/compare/1588550400/1588636800

https://backpack.tf/profiles/76561198079578383#!/compare/1588636800/1588118400

Sold for 79.99 on May 22, 2020 (79.99/1.87 = 42.77 rounding to 43 keys)

Sold for 79 on June 10, 2020 (79/2.01 = 39.30 rounding to 39 keys)

https://marketplace.tf/items/tf2/30017;5;u13

https://backpack.tf/item/7389267892

Buyout was 40 keys

https://bot.tf/stats/listings/Y80W1Z5D

Caps at 40.

Quicksold for 27 keys?

https://backpack.tf/profiles/76561198821294885#!/compare/1592697600/1592956800

https://backpack.tf/profiles/76561198197292179#!/compare/1592784000/1592956800

The seller originally had it listed at 40k, then sold for 27.

Scorching Oiled (mini at 39) + KS stuff that will be kinda hard to mini

https://backpack.tf/profiles/76561198061779536#!/compare/1591315200/1591488000

https://backpack.tf/profiles/76561198000326258#!/compare/1591401600/1591488000

Oiled sold for ~39 here

https://backpack.tf/profiles/76561197994020659#!/compare/1586304000/1586649600

Classifieds:

https://gyazo.com/5c19cb12ff618b367e0f6eedd7bdf8af

1 @ 27 keys

1 @ 29 keys

1 @ 39 keys

1 @ 40 keys

1 @ 44 keys

27 was originally listed at 40. Excluding 27.

Seller at 40. Excluding 44.

That leaves sales at 29, 39, and 40.

Taking a range of 39-40 keys here.