Credits to randy for the first 3 sales, countering with some more information.

Sale # 1 - Sold for a Eerie Orbiting Fire Anger After overpay = 46 keys (outlier)

Bp of Seller Before http://backpack.tf/profiles/76561197993888396?time=1424937600

Bp of Seller After http://backpack.tf/profiles/76561197993888396?time=1425024000

History of Anger - http://backpack.tf/item/1215781988

History of Toque - http://backpack.tf/item/920513630

Sale # 2 - Sold with about 5 keys in items for Purple Energy Dragonborn Helmet After overpay = 31 keys [outlier]

Bp of Seller Before http://backpack.tf/profiles/76561198037238070?time=1426316400

Bp of Seller After http://backpack.tf/profiles/76561198037238070?time=1426402800

History of Dragon - http://backpack.tf/item/739545427

History of Toque - http://backpack.tf/item/959539084

Sale # 3 - Sold for 62 keys

Bp of Seller Before http://backpack.tf/profiles/76561198055519161?time=1428390000

Bp of Seller After http://backpack.tf/profiles/76561198055519161?time=1428476400

Sale #4 - sold for $129 via paypal. using ~ $1.75 for keys even though I was asking $1.85 per key, gives 73 keys. my buyout was 70, taking that. 70 keys.

http://imgur.com/a/8XWhm

Sale # 5 http://www.tf2outpost.com/trade/25547749 sold in less than a day for 45 pure.

http://backpack.tf/profiles/76561198048843537?time=1427870185

With 45 quickselling, 46 in unusual should be considered an outlier when there's two pure sales much higher up.