Lets get the proof out of the way

=============Unsolds at 1.5 keys========================

http://www.tf2outpost.com/trade/14723356 - 1.5 keys

http://www.tf2outpost.com/trade/14728313 - 1.5 keys

http://www.tf2outpost.com/trade/14727314 - 1.5 keys

http://www.tf2outpost.com/trade/14736602 - 1.5 keys

http://www.tf2outpost.com/trade/14739458 - 1.5 keys

http://www.tf2outpost.com/trade/14737495 - 1.5 keys

==============Selling for 1.3 or less====================

http://www.tf2outpost.com/trade/14744019 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14711792 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14707458 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14703355 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14735707 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14741317 - 1 key + 2 ref

==============Sold for 1.3 keys or less==================

http://www.tf2outpost.com/trade/14743152 - 1 key

http://www.tf2outpost.com/trade/14707521 - 1 key

http://www.tf2outpost.com/trade/14714563 - 1.1 keys

http://www.tf2outpost.com/trade/14727231 - 1 key + 1 ref

http://www.tf2outpost.com/trade/14727073 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14730344 - 1 key + 2 ref

http://www.tf2outpost.com/trade/14723132 - 1 key + 2 ref

Suggesting this price because there are hardly any sales at 1.5 keys actually selling, while 1.2 keys are usually bought fast.

Most sales and successful listings are at the price range of 1.3 keys.