13 keys looking like a quicksell.

http://www.tf2outpost.com/trade/17433552 - offer of 15 keys?

http://www.tf2outpost.com/trade/17199497 - 15 keys

http://www.tf2outpost.com/trade/17184652 - 15 keys

http://www.tf2outpost.com/trade/16792530 - 15 keys

http://www.tf2outpost.com/trade/16783439 - 15 keys

http://www.tf2outpost.com/trade/17693568 - 15 keys

http://www.tf2outpost.com/trade/18074890 - easily gets offers of 13 on multiple trades

http://www.tf2outpost.com/trade/18089062 - sold for smoking prancers (old price. prancer seller had b/o of 15, later sold for stormy bucket, so ~15 after overpay is reasonable)

http://www.tf2outpost.com/trade/18096412 - BO 15, sold for orbit fire baker boy (outlier)

http://www.tf2outpost.com/trade/18074890 - rejected 13 keys

http://www.tf2outpost.com/trade/18110827 - rejected 15 keys

http://www.tf2outpost.com/trade/18089062 - sold for smoking prancers (~15 keys, old price)

http://www.tf2outpost.com/trade/18066596 - sold really quickly for 14 keys

Feel free to counter / support blind polar bear's, shenanigan's, and A god damn pony [ßЯς]'s proof. Vote based on proof presented, not blindly!