Update!

Done by: SubZero

Sale 1:

https://backpack.tf/item/6212968564

Untraceable

https://backpack.tf/profiles/76561198056327660#!/compare/1589328000/1589414400

https://backpack.tf/profiles/76561198445464412#!/compare/1589414400/1592006400

Sale 2:

https://backpack.tf/item/5197124995

Sold w/ 7 Keys for Scorching Flames Tank Top (33.5 Keys, rounding to 34)

Taking 27 Keys

https://backpack.tf/profiles/76561198101725605#!/compare/1592697600/1592956800

https://backpack.tf/profiles/76561198112281935#!/compare/1592784000/1592870400

Sale 3:

https://backpack.tf/item/5207488602

Sold w/ Dead of Night (23.88 Ref) + All Father (15.11 Ref) for 55 Keys

Taking 54 Keys

https://backpack.tf/profiles/76561198179707937#!/compare/1586649600/1587513600

https://backpack.tf/profiles/76561198354125352#!/compare/1587513600/1587600000

Sale 4:

Marketplace Sales

https://marketplace.tf/items/tf2/30796;5;u108

Sale 5:

https://backpack.tf/item/5207488602

Sold for a Scorching Flames Sky High Fly Guy (34.5 keys) + a Starstorm Slumber Nasty Norsemann (18.5 Keys)

( Fly Guy Suggestion: https://backpack.tf/suggestion/5f0aef62edf4541f16591319)

34.5 + 18.5 = 53, buyout was 42: https://bot.tf/stats/listings/Y3WG66OR

Taking 42

https://backpack.tf/profiles/76561198114402400#!/compare/1586736000/1586822400

https://backpack.tf/profiles/76561198062245164#!/compare/1586822400/1586908800

Sold on Jun 17th for $76.87, Keys were $1.98 (38.82 Keys)

Taking 39 Keys (Rounding up)

Sale 6:

Sold on May 14th for $88.99, Keys were $1.90 (46.84 Keys)

Taking 47 Keys (Rounding up)

Classies: https://i.imgur.com/RYOg9Dk.png. 50 is a bit unsold. Going with 39-47, excluding 27 & 54 as outliers.