I like Brothers

He doesn't have Steam

Sellers: - https://snag.gy/LIYzqK.jpg

https://backpack.tf/item/4994241324 - 10 Days @ 41 Keys (Owns 2)

https://backpack.tf/item/2473311257 - 6 Days @ 45 Keys

Sale 1)

https://marketplace.tf/items/30066;5;u36 + https://backpack.tf/item/5453784548 - Sold for ~43 "Keys"

B/O: Was (42) http://www.tf2outpost.com/trade/29451405

Sale 2)

https://backpack.tf/profiles/76561198408614460#!/compare/1511395200/1512518400 - SCM

Sale 3)

https://marketplace.tf/items/30066;5;u36 + https://backpack.tf/item/5004371240 - Sold for ~(48) "Keys"

B/O: Was 65 http://www.tf2outpost.com/trade/28505149

Sale 4)

https://backpack.tf/profiles/76561198118304043#!/compare/1510185600/1510272000

https://backpack.tf/profiles/76561198011321852#!/compare/1510185600/1510272000 - Cash/CSGO

Sale 5)

https://backpack.tf/profiles/76561198203872345#!/compare/1509926400/1510012800 - Sold for a Disco Beat Down Chieftain's Challenge + 6 Keys - Use there

B/O: Was 45 http://www.tf2outpost.com/trade/29428786

Sale 6)

https://backpack.tf/profiles/76561198203872345#!/compare/1509753600/1509840000 - Sold for a Harvest Moon Professional's Panama (53)

B/O: No Buyout

Sale 7)

https://backpack.tf/profiles/76561198253776037#!/compare/1509667200/1509753600 - Sold for a Duped Haunted Ghosts Hot Dogger (43) + 6 Keys = (49)

B/O: No Buyout

Mini for Dogger:

https://backpack.tf/profiles/76561198021272428#!/compare/1514505600/1514592000 = ~43 Keys

https://backpack.tf/item/3347866983 - Ignoring bot purchase

Sale 8)

https://backpack.tf/profiles/76561198274207801#!/compare/1509321600/1509408000 - Sold for 22 Keys?

(Other side sold too quickly)

Sale 9)

https://backpack.tf/profiles/76561198274207801#!/compare/1508803200/1509321600

https://backpack.tf/profiles/76561198274207801#!/compare/1509321600/1509408000 - Taunt

https://backpack.tf/profiles/76561198156255538#!/compare/1509148800/1509235200 - + Rocket

Sale 10)

https://backpack.tf/profiles/76561198129896863#!/compare/1508976000/1509148800 - Near enough bulky

Sale 11)

https://backpack.tf/profiles/76561198069813252#!/compare/1512259200/1512777600 - Sold for a '72 Taunt: Results Are In (15) + 19 Keys + ~16 in Sweets = (50)

B/O: Was 57 http://www.tf2outpost.com/trade/28848797

Sale 12)

https://backpack.tf/item/2473311257 + https://marketplace.tf/items/30066;5;u36 - Sold for ~(48) "Keys"

B/O: No Buyout

Sale 13)

https://backpack.tf/profiles/76561198128750169#!/compare/1515715200/1515801600 - Sold for a Searing Plasma Airdog + 24 Keys - Fits range

Sale 14)

https://backpack.tf/profiles/76561198159787257#!/compare/1514332800/1514419200 - Sold for a Disco Beat Down Cold Killer (43)

B/O: Was 50 http://www.tf2outpost.com/trade/29485535

Sales we have are:

42, 43, 48, 48, 49, 50 and 53

Calling 53 an outlier to neaten range, it was likely Buyout capped also and with the multiple sellers below (Not excluding others as they were pure or near enough pure)

Thanks =)