https://backpack.tf/item/4762107349https://backpack

Sale 1) Sold for a Death by Disco Death Racer's Helmet (53.5 Keys)

https://backpack.tf/profiles/76561198424469290#!/compare/1535500800/1535587200

High outlier.

Sale 2) Sold to a quickbuyer for 36 Keys + 15 Refined

https://backpack.tf/profiles/76561198030343929#!/compare/1536105600/1536192000

Low outlier.

Sale 3) Sold for 37 Keys

https://backpack.tf/profiles/76561198119634686#!/compare/1539475200/1539561600

Sale 4) Sold + Holy Grail Disco Fever for a Clairvoyance Murderer's Motif

https://backpack.tf/profiles/76561198105989510#!/compare/1541635200/1541808000

This should be used to price the Motif.

Sale 5) Sold for a Searing Plasma Harmburg

https://backpack.tf/profiles/76561198062711407#!/compare/1541808000/1541894400

The Harmburg has no Mini.

Sale 6) Sold + ~18 Keys of Items + 8 Keys for a Green Confetti Pencil Pusher (40 Keys) + Death at Dusk Larrikin Robin (28 Keys)

https://backpack.tf/profiles/76561198407541175#!/compare/1542240000/1542326400

https://backpack.tf/profiles/76561198070705963#!/compare/1542240000/1542326400

40 + 28 - 18 - 8 = 42 Keys

Robin Mini

https://backpack.tf/suggestion/5bf8f594cf6c753efd5b16ac - 28 Keys

Sale 7) ?

https://backpack.tf/profiles/76561198252610884#!/compare/1542412800/1542844800

Feedbacks are welcome :)