Boo.

Sale 1: Sold for 45 keys

https://backpack.tf/profiles/76561198156315732#!/compare/1590710400/1590796800

https://backpack.tf/profiles/76561198074685139#!/compare/1590710400/1590883200

Sale 2: Sold for 39 keys

https://backpack.tf/profiles/76561198156315732#!/compare/1590364800/1590537600

https://backpack.tf/profiles/76561198956707902#!/compare/1590537600/1590624000

Sale 3: Sold for Fifth Dimension Brain Interface (Open suggestion at 24 keys) + 18 keys

https://backpack.tf/profiles/76561198374206487#!/compare/1590019200/1590451200

https://backpack.tf/profiles/76561198956707902#!/compare/1590451200/1590364800

24 + 18 = 42 keys

Mini for Fifth Dimension Brain Interface:

https://backpack.tf/suggestion/5ed479d437395e46ea6b8146

Sale 4: Sold with Tesla Coil Nasty Norsemann for It's A Secret To Everybody Magistrate's Mulle

https://backpack.tf/profiles/76561198119556478#!/compare/1589241600/1589500800

https://backpack.tf/profiles/76561198119556478#!/compare/1588809600/1588896000

Sale 5: Unknown

https://backpack.tf/profiles/76561198353907556#!/compare/1588896000/1588982400

https://backpack.tf/profiles/76561198119556478#!/compare/1588896000/1588982400

Sale 6: Sold for atleast 4 keys

https://backpack.tf/profiles/76561198068732040#!/compare/1586044800/1585958400

https://backpack.tf/profiles/76561198183660635#!/compare/1585872000/1586044800

Sale 7: Sold for 36 keys

https://backpack.tf/profiles/76561198068732040#!/compare/1586217600/1586304000

https://backpack.tf/profiles/76561198304001962#!/compare/1586217600/1586304000

Sale 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 & 19: Marketplace

https://marketplace.tf/items/tf2/31016;5;u114

https://backpack.tf/item/7359750036

https://backpack.tf/item/7342651080

https://backpack.tf/item/7278849283

https://backpack.tf/item/7258131811

52 on March 26, 2020 (52/1.68 = 30.95 rounding to 31 keys)

72 on April 5, 2020 (72/1.69 = 42.60 rounding to 43 keys)

60 on April 10, 2020 (60/1.68 = 35.71 rounding to 36 keys)

2 sold for 70.99 on April 20, 2020 (70.99/1.79 = 39.65 rounding to 40 keys)

49.87 on April 22, 2020 (49.87/1.75 = 28.49 rounding to 28 keys)

71.27 on April 28, 2020 (71.27/1.82 = 39.15 rounding to 39 keys)

71.27 on May 2, 2020 (71.27/1.87 = 38.11 rounding to 38 keys)

77.78 on May 3, 2020 (77.78/1.87 = 41.59 rounding to 42 keys)

89.95 on May 10, 2020 (89.95/1.9 = 47.34 rounding to 47 keys)

99.95 on May 13, 2020 (99.95/1.9 = 52.60 rounding to 53 keys)

95 on June 1, 2020 (95/1.92 = 49.47 rounding to 49 keys)

Sale 20: Unknown

https://backpack.tf/profiles/76561198080179568#!/compare/1588636800/1588723200

https://backpack.tf/profiles/76561198070697093#!/compare/1588377600/1589587200

Sale 21: Unknown

https://backpack.tf/profiles/76561198057139045#!/compare/1589068800/1589155200

https://backpack.tf/profiles/76561198043956715#!/compare/1588464000/1589414400

Sale 22: Sold for 36 keys

https://backpack.tf/profiles/76561197996306396#!/compare/1585785600/1585872000

https://backpack.tf/profiles/76561198057139045#!/compare/1585699200/1585785600

Classifieds:

https://gyazo.com/e818482ecbc995f81e085795de68aa6b

Sales are 36, 36, 39, 42, and 45. Marketplace sales at 28, 31, 36, 38, 39, 40, 42, 43, 47, 49, and 53.

Buyers are at 36+. Excluding 28 and 31. One seller at 50, for 6 days. Excluding 53.

Although there are buyers at 36, there are 3 sales at 36, as well as sales at 38 and 39, supporting the low end. Taking a wide range of 36-49 keys here.