Let's start off with some support proof:

Classified AS OF THE POST OF THIS SUGGESTION:

x1 at 1.33. ( http://i.imgur.com/GtfBUY4.png )

x2 at 1.44. ( http://i.imgur.com/h4hRata.png )

x1 ar 1.55. ( http://i.imgur.com/xSnKO0K.png )

Selling for less than 1.66:

http://www.tf2outpost.com/trade/19936667 - "10% lower than bp.tf" - [BOT]

http://www.tf2outpost.com/trade/19353214 - "10% lower than bp.tf" - [BOT]

http://www.tf2outpost.com/trade/19918891 - 1.33 - 1 Day old.

http://www.tf2outpost.com/trade/19932478 - 1.33 - 1 Day old.

http://www.tf2outpost.com/trade/19908178 - 1.33 - 2 Days old.

http://www.tf2outpost.com/trade/19911591 - 1.33 - 2 Days old.

http://www.tf2outpost.com/trade/19846000 - 1.33 - 5 Days old - Poor bumping.

http://www.tf2outpost.com/trade/19738783 - 1.44 - 1 Week+ old - Never bumped.

http://www.tf2outpost.com/trade/19931275 - 1.44 - 1 Day old.

http://www.tf2outpost.com/trade/19929651 - 1.44 - 1 Day old.

http://www.tf2outpost.com/trade/19902112 - 1.44 - 2 Days old.

http://www.tf2outpost.com/trade/19944713 - 1.55.

http://www.tf2outpost.com/trade/19670198 - 1.55 - 2 Weeks+ old - Poor bumping.

UNSOLDS for 1.66:

http://www.tf2outpost.com/trade/19936316 - Young.

http://www.tf2outpost.com/trade/19934571 - Young.

http://www.tf2outpost.com/trade/19931992 - Young.

http://www.tf2outpost.com/trade/19917125 - 1 Day old - Never bumped.

http://www.tf2outpost.com/trade/19916930 - 1 Day old - Never bumped.

http://www.tf2outpost.com/trade/19903110 - 2 Days old.

http://www.tf2outpost.com/trade/19901749 - 2 Days old.

http://www.tf2outpost.com/trade/19907525 - 2 Days old - Poor bumping.

http://www.tf2outpost.com/trade/19895800 - 3 Days old.

http://www.tf2outpost.com/trade/19888932 - 3 Days old - Poor bumping.

http://www.tf2outpost.com/trade/19888090 - 3 Days old.

http://www.tf2outpost.com/trade/19873911 - 4 Days old - Never bumped.

http://www.tf2outpost.com/trade/19872635 - 4 Days old.

http://www.tf2outpost.com/trade/19853650 - 5 Days old.

http://www.tf2outpost.com/trade/19704980 - 1 Week+ old - Poor bumping.

http://www.tf2outpost.com/trade/19735599 - 1 Week+ old.

http://www.tf2outpost.com/trade/19738155 - 1 Week+ old.

http://www.tf2outpost.com/trade/19757808 - 1 Week+ old - Never bumped.

http://www.tf2outpost.com/trade/19737525 - 1 Week+ old.

http://www.tf2outpost.com/trade/19808406 - 1 Week+ old.

http://www.tf2outpost.com/trade/19760274 - 1 Week+ old.

http://www.tf2outpost.com/trade/19762354 - 1 Week+ old - Poor bumping.

http://www.tf2outpost.com/trade/19571482 - 2 Weeks+ old.

http://www.tf2outpost.com/trade/19587484 - 2 Weeks+ old.

http://www.tf2outpost.com/trade/19689446 - 2 Weeks+ old.

http://www.tf2outpost.com/trade/19585292 - 2 Weeks+ old.

http://www.tf2outpost.com/trade/19555902 - 3 Weeks+ old.

http://www.tf2outpost.com/trade/18979851 - 1 Month+ old.

http://www.tf2outpost.com/trade/19929904 - "backpack.tf prices" - 1 Day old.

http://www.tf2outpost.com/trade/19871960 - "backpack.tf prices" - 4 Days old - Never bumped.

http://www.tf2outpost.com/trade/19694987 - "backpack.tf prices" - 1 Week+ old.

http://www.tf2outpost.com/trade/19812286 - "backpack.tf prices" - 1 Week+ old.

http://www.tf2outpost.com/trade/19743786 - "backpack.tf prices" - 1 Week+ old - Poor bumping.

http://www.tf2outpost.com/trade/19634470 - "backpack.tf prices" - 2 Weeks+ old.

http://www.tf2outpost.com/trade/19647245 - "backpack.tf prices" - 2 Weeks+ old - Poor bumping.

http://www.tf2outpost.com/trade/19547882 - "backpack.tf prices" - 3 Weeks+ old.

http://www.tf2outpost.com/trade/19269273 - "backpack.tf prices" - 1 Month+ old - Poor bumping.

http://www.tf2outpost.com/trade/19371947 - "backpack.tf prices" - 1 Month+ old - Poor bumping.

I included poorly bumped/young ones due to the small amount it was on OutPost.