2 years outdated.

Taking last 2 months.

Sold for 25 keys

https://backpack.tf/profiles/76561198002757046#!/compare/1592438400/1592524800

https://backpack.tf/profiles/76561198133887117#!/compare/1592438400/1592524800

Untrace

https://backpack.tf/profiles/76561198003182128#!/compare/1589500800/1592697600

https://backpack.tf/profiles/76561198002757046#!/compare/1589500800/1589414400

Untrace

https://backpack.tf/profiles/76561198800776268#!/compare/1587859200/1587945600

https://backpack.tf/profiles/76561198003182128#!/compare/1587686400/1587945600

Sold for 17 keys + 9 refined

https://backpack.tf/profiles/76561198305494036#!/compare/1587772800/1587859200

https://backpack.tf/profiles/76561198800776268#!/compare/1587859200/1587772800

Rounds to 17 keys.

Untrace

https://backpack.tf/profiles/76561198082497772#!/compare/1592006400/1592092800

https://backpack.tf/profiles/76561198066319618#!/compare/1576195200/1592092800

Sold for 29 keys

https://backpack.tf/profiles/76561198162806285#!/compare/1590019200/1590105600

https://backpack.tf/profiles/76561198067641496#!/compare/1589846400/1591315200

Sold for 21 keys + 14.66 refined + about 4 refined in small sweets

https://backpack.tf/profiles/76561198148836514#!/compare/1589155200/1589241600

https://backpack.tf/profiles/76561198162806285#!/compare/1589068800/1589155200

Rounds to 21 keys

Sold for 15 keys

https://backpack.tf/profiles/76561198320289008#!/compare/1588896000/1588982400

https://backpack.tf/profiles/76561198148836514#!/compare/1588723200/1588896000

Untrace

https://backpack.tf/profiles/76561198223881088#!/compare/1588809600/1588896000

https://backpack.tf/profiles/76561198320289008#!/compare/1588723200/1588809600

Sold for Vivid Plasma Hive Minder

https://backpack.tf/profiles/76561198062668862#!/compare/1588636800/1588809600

https://backpack.tf/profiles/76561198223881088#!/compare/1588464000/1588636800

Using there.

Sold for 2 keys + Strange Killstreak Flame Thrower + Taunt: The Fubar Fanfare + other sweets adding to about a key

https://backpack.tf/profiles/76561198850274253#!/compare/1588464000/1588550400

https://backpack.tf/profiles/76561198220685924#!/compare/1588377600/1588550400

Probably other items were added, but not showing here.

Sold for 49.95 on May 5, 2020 (49.95/1.88 = 26.57 rounding to 27 keys)

Sold for 61.67 on May 22, 2020 (61.67/1.87 = 32.98 rounding to 33 keys)

Sold for 35 on June 1, 2020 (35/1.92 = 18.23 rounding to 18 keys)

Sold for 54.99 on June 14, 2020 (54.99/1.99 = 27.63 rounding to 28 keys)

https://marketplace.tf/items/tf2/981;5;u58

Classifieds:

https://gyazo.com/47b5e86fa4bc05fa0bf603db56504977

1 @ 15 keys

1 @ 17 keys

1 @ 18 keys

1 @ 21 keys

1 @ 25 keys

1 @ 27 keys

1 @ 28 keys

1 @ 29 keys

1 @ 33 keys

Highest buyers range from 15.19 to 22.43 keys. Excluding 15 to 21, and yes that's excluding some sales, but those seem very low in this case with all these buyers.

Taking a range of 25-33 keys here.