Sellers:

http://www.tf2outpost.com/trade/27449468 - 5 Keys 3 Ref - 3 Days

http://www.tf2outpost.com/trade/27462087 - 5 Keys 3 Ref (KS) - 1 Day

~~~ http://www.tf2outpost.com/trade/27452612 - Unsold for 2 Days at 5 Keys 3 Ref

http://www.tf2outpost.com/trade/25889110 - 5 Keys 3 Ref - Umm, 6 Months? - I'm assuming open and closed

http://www.tf2outpost.com/trade/27403397 - 5 Keys 2 Ref (KS) - 12 Days

http://www.tf2outpost.com/trade/27396737 - 5 Keys 2 Ref (Spec KS) - 12 Days

~~~ I ended up selling one for 5 Keys Pure

http://www.tf2outpost.com/trade/27421651 - 5 Keys - 8 Days

http://www.tf2outpost.com/trade/27459422 - 5 Keys - 1 Day

http://www.tf2outpost.com/trade/27414068 - 'bp.tf price' - 9 Days

Classifieds:

http://imgur.com/a/Ff6ZC

x5 5 Keys (x3 are Spec KS)

x1 5 Keys 1 Ref

x2 5 Keys 2 Ref

Conclusion:

Several unsolds at above 5 Keys with unsolds at 5 Keys (with free spec ks), taking a flat range of 5 Keys.

While this isn't a 5% change, 5 Keys is better than 5.1 Keys, whole numbers <3