1 Year outdated and a refresh :o

Sale 1:

Sold for Cauldron Bloke's + Steaming Brainiac + Overclocked Geezer + Stormy Rag

http://backpack.tf/profiles/76561198009894519?time=1448352000

http://backpack.tf/profiles/76561198009894519?time=1448438400

http://backpack.tf/profiles/76561198009894519?time=1448352000&compare=1448438400

(20 + 17 + 11 + 13) x 0.9

61 x 0.9

= 55 Keys

Mini for Geezer

Possibly sold for 11 Keys?

Buyer

http://backpack.tf/profiles/76561198144286104?time=1443769200

http://backpack.tf/profiles/76561198144286104?time=1444633200

http://backpack.tf/profiles/76561198144286104?time=1443769200&compare=1444633200

Seller

http://backpack.tf/profiles/76561198129731125?time=1444460400

http://backpack.tf/profiles/76561198129731125?time=1444546800

http://backpack.tf/profiles/76561198129731125?time=1444460400&compare=1444546800

Perhaps keys were used to buy the Impaler? Either way, if it's wrong it doesn't make a significant difference

Taking 11 Keys

Mini for Rag

http://www.tf2outpost.com/trade/27345965 - Seller at 13 Keys - Unsold for 23 Days

Taking 13 Keys

Sale 2:

Bulk for Secret Tavish Crown

http://backpack.tf/profiles/76561198157621024?time=1447401600

http://backpack.tf/profiles/76561198157621024?time=1447488000

http://backpack.tf/profiles/76561198157621024?time=1447401600&compare=1447488000

Not using

Sale 3:

Looks like it sold for 40 Keys according to histories

http://backpack.tf/profiles/76561198009894519?time=1448006400

http://backpack.tf/profiles/76561198009894519?time=1448092800

http://backpack.tf/profiles/76561198009894519?time=1448006400&compare=1448092800

It's a bit far from the other sale, it sold without an outpost trade it seems.

Ruling as an outlier as offers appear to be higher than 40 Keys on a gifted variant - http://www.tf2outpost.com/trade/25234562

~~~ 50 Keys Pure

~~~ CV Chieftain's

~~~ Planets Rack

~~~ Terror-watt War Pig + Blizzard Milkman + '12 keys' of sweets

Not using

Conclusion:

One valid sale at 55 Keys and one outlier sale at 40 Keys due to offers a gifted one receives. Taking a flat range of 55 Keys