http://www.tf2outpost.com/trade/25773631

Sold for a Ghosts Phantom (67)

http://backpack.tf/profiles/76561198072140772?time=1431068400 (May 8th)

http://backpack.tf/profiles/76561198072140772?time=1431154800 (May 9th)

67 * 0.9 = 60 keys

———

http://www.tf2outpost.com/trade/25638301

Sold for Burning Ye Oiled (66) + Uncraft Summer Hat (7 keys) + ~3 keys in other items

http://backpack.tf/profiles/76561198044339816?time=1429599600 (April 21st)

http://backpack.tf/profiles/76561198044339816?time=1429686000 (April 22nd)

(66 + 7 + 3) * 0.9 = 69 keys

———

http://www.tf2outpost.com/trade/25912455

Sold for a Max (25) + 2 buds (8) + 37 keys

http://backpack.tf/profiles/76561198026816281?time=1431154800 (May 9th)

http://backpack.tf/profiles/76561198026816281?time=1431327600 (May 11th)

25 + 8 + 37 = 70 keys

———

Sold for Disco Pile of Scrap which should be an outlier.

http://backpack.tf/profiles/76561198112764226?time=1428217200 (April 5th)

http://backpack.tf/profiles/76561198112764226?time=1428476400 (April 8th)