BONK

http://backpack.tf/item/2078611638

Sale 1) Sold for a Burning Flames Gentleman's Gatsby + ~3 Keys of Items

http://backpack.tf/profiles/76561198114402400#!/compare/1487203200/1487289600

http://www.tf2outpost.com/trade/28774919 - Capped by the Buyout of 50 Keys

Sale 2) Sold + ~9 Keys of Items (Scattergun, Escape, Mannrobics) for a Death at Dusk Greased Lightning (60 Keys)

http://backpack.tf/profiles/76561198195908381#!/compare/1488499200/1489276800

60 - 9 = 51 Keys, which I'll round to 50 Keys

Greased Mini

Sold + Items that don't matter because of the Buyout Cap for a Disco Beat Down Tosslecap + Haunted Ghosts Grenadier's

http://backpack.tf/profiles/76561198112279227#!/compare/1492560000/1492732800

http://www.tf2outpost.com/trade/28851247 - Capped by the Buyout of 60 Keys