Creds to Shuffle Spy for all suggestion:

https://backpack.tf/item/4989636311

Sale 1) Sold for a Disco Beat Down Virtual Viewfinder (235 Keys) + Green Energy Connoisseur's Cap (38 Keys) + Green Energy Gym Rat

https://backpack.tf/profiles/76561198077746093#!/compare/1503446400/1503532800

http://www.tf2outpost.com/trade/29327472 - Capped by the Buyout of 295 Keys

Sale 2) Sold for a Green Energy Rotation Sensation + Burning Flames Vintage Merryweather

https://backpack.tf/profiles/76561197970565723#!/compare/1509926400/1510012800

Cannot find usable mini on Merryweather here

Sale 3) Sold for a Sunbeams Rotation Sensation (270)

https://backpack.tf/profiles/76561197994619898#!/compare/1510358400/1510444800

Sunbeams Rotation Micro

https://backpack.tf/item/4763482170

Sale 2) Sold for a Scorching Flames Ground Control + Eldritch Flame Prehistoric Pullover + 13 Keys

https://backpack.tf/profiles/76561198081793950#!/compare/1506124800/1506211200

http://www.tf2outpost.com/trade/29366126 - Capped by the Buyout of 270 Keys

https://backpack.tf/item/3353301929

https://imgur.com/a/MQGJW

Dumped on mp.tf for over 2 weeks now for $400 = ~200 keys

I'll take really wide range here but I guess it deserves it