4 years and I just instinctively bought this for fun cause neutron is top 5 :D

Sale #1:

https://backpack.tf/item/5244484029

https://marketplace.tf/items/tf2/30067;5;u107

$370 / 1.94 = 190.7 keys

Sale #2:

https://backpack.tf/item/5270889509

https://backpack.tf/profiles/76561199674417290#!/compare/1746230400/1746316800

https://backpack.tf/profiles/76561198135388028#!/compare/1745971200/1746403200 ~ untrace, bought off the bot then put onto scrap for auction one presumes?

Sale #3:

https://backpack.tf/profiles/76561198135388028#!/compare/1746403200/1747008000

https://backpack.tf/profiles/76561198333956354#!/compare/1746316800/1746403200 ~ buys multiple hats, no idea how many go towards the rifleman

Sale #4:

https://backpack.tf/profiles/76561198333956354#!/compare/1746403200/1746489600 ~ sold alongside the Time Warp Old Guadalajara for 428 keys pure

https://backpack.tf/profiles/76561198220098345#!/compare/1746403200/1746489600

Mini guadjajajaja:

https://backpack.tf/suggestion/688b926f24fe18172108c845 ~ 217.5

428 - 217.5 = 210.5

Sale #5:

https://backpack.tf/profiles/76561199076204861#!/compare/1751328000/1751760000 ~ untrace

https://backpack.tf/profiles/76561198333956354#!/compare/1746403200/1746489600 ~ untrace as sells same day it seems

Sales @ 191, 211.