Re-suggested with some updated proof.

Classifieds AS OF THE LISTING OF THIS ITEM.

x1 at 17 Keys. ( http://i.imgur.com/uvZskoX.png )

x1 at 17 Keys+ 5 Refined. ( http://i.imgur.com/uQnLYHZ.png )

x4 at 18 Keys. ( http://i.imgur.com/PFrJOJu.png )

Sellers below 19:

http://www.tf2outpost.com/trade/19869414 - 16 Keys - [Sold].

http://www.tf2outpost.com/trade/19883225 - 17 Keys - Has Parts.

http://www.tf2outpost.com/trade/19934753 - 17 Keys.

http://www.tf2outpost.com/trade/19905846 - 17 Keys + 5 Refined.

http://www.tf2outpost.com/trade/19877973 - 18 Keys - Specialized.

http://www.tf2outpost.com/trade/19730244 - 18 Keys.

http://www.tf2outpost.com/trade/19922918 - 18 Keys.

http://www.tf2outpost.com/trade/19949197 - 18 Keys.

http://www.tf2outpost.com/trade/19425263 - 18 Keys.

http://www.tf2outpost.com/trade/19950735 - 18 Keys - Has parts.

http://www.tf2outpost.com/trade/19938868 - 18 Keys + 5 Refined - Has parts.

Unsolds:

http://www.tf2outpost.com/trade/19927789 - 1 Day old - 19 Keys.

http://www.tf2outpost.com/trade/19910838 - 2 Days old - 19 Keys.

http://www.tf2outpost.com/trade/19872743 - 4 Days old - 19 Keys.

http://www.tf2outpost.com/trade/19882589 - 4 Days old - 19 Keys - Specialized.

http://www.tf2outpost.com/trade/19763939 - 1 Week+ old - 19 Keys.

http://www.tf2outpost.com/trade/19700249 - 1 Week+ old - 19 Keys.

http://www.tf2outpost.com/trade/19816407 - 1 Week+ old - 19 Keys.

http://www.tf2outpost.com/trade/19640574 - 2 Weeks+ old - 19 Keys.

http://www.tf2outpost.com/trade/19484396 - 3 Weeks+ old - 19 Keys.

http://www.tf2outpost.com/trade/19358971 - 1 Month+ old - 19 Keys.

Everything else that is for sale is Proffesional/Priced due to Strange Parts on it.

Yes I know there's another vote to put it at 18-19.

But, considering which ones are for sale at the moment, 18 flat makes a lot more sense.