Close my eyes and take it in..

Sale 1: Unknown

https://backpack.tf/profiles/76561198448065474#!/compare/1584230400/1587772800

https://backpack.tf/profiles/76561198049959284#!/compare/1587945600/1589328000

Sale 2: Sold for Sunbeams Human Cannonball (Open suggestion at 54.5 keys)

https://backpack.tf/profiles/76561198092010721#!/compare/1571702400/1588896000

https://backpack.tf/profiles/76561198107918661#!/compare/1588550400/1589068800

54.5 rounding to 55 keys

No buyout found.

Human Cannonball:

https://backpack.tf/suggestion/5ec70b685914e5377a185dee

Sale 3: Unknown

https://backpack.tf/profiles/76561198046364108#!/compare/1588550400/1588896000

https://backpack.tf/profiles/76561198092010721#!/compare/1571702400/1588896000

Sale 4: Sold for 32 keys?

https://backpack.tf/profiles/76561198131081286#!/compare/1587254400/1587427200

https://backpack.tf/profiles/76561198342161127#!/compare/1587254400/1587168000

Histories do not match.

Sale 5: Unknown

https://backpack.tf/profiles/76561198850274253#!/compare/1587859200/1587945600

https://backpack.tf/profiles/76561198152914833#!/compare/1587859200/1588204800

Sale 6, 7, 8 & 9: Marketplace

https://marketplace.tf/items/tf2/30067;5;u61

https://backpack.tf/item/1994502789

69.99 on March 21, 2020 (69.99/1.68 = 41.66 rounding to 42 keys)

33.14 on April 5, 2020 (33.14/1.69 = 19.60 rounding to 20 keys)

69.99 on April 15, 2020 (69.99/1.77 = 39.54 rounding to 40 keys)

95 on May 9, 2020 (95/1.89 = 50.26 rounding to 50 keys)

Classifieds:

https://gyazo.com/e67a03f209ca00b4581a13966377b24b

Sales are at 20, 40, 42, 50, and 55. Buyers at 28+. Sellers at 49 and 50, for 3 weeks each. Excluding 20, 50 and 55. Taking a range of 40-42 keys here.