#2 in my Simulator-choosing endeavor - $366.03

http://backpack.tf/item/1019564585

Sale) Sold for a Blizzardy Storm Conjurer's Cowl (Updated at 23 when the sale happened) + Duped Blizzardy Storm Lucky Shot (17 Keys)

http://backpack.tf/profiles/76561198120722223#!/compare/1462665600/1462838400

23 + 17 = 40 Keys

Lucky Shot Mini

http://backpack.tf/profiles/76561198105149068#!/compare/1466640000/1466899200 - Sold for 15 Keys + ~1.5 Keys in Items

Rounding to 17 Keys

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As a side note for the Cowl, this was offered ~23 Keys: http://www.tf2outpost.com/trade/28170311