Classifieds :

http://imgur.com/2pRlyge

2 sellers at 1,55 ref (both have mobile auth.)

1 buyer at 1,33 ref

Unsolds :

http://www.tf2outpost.com/trade/27935084 - 1,33 ref (1 day, buyer counters)

http://www.tf2outpost.com/trade/27934681 - 1,66 ref (2 days)

http://www.tf2outpost.com/trade/27930442 - 1,66 ref (3 days)

http://www.tf2outpost.com/trade/27915074 - 1,66 ref (1 week)

http://www.tf2outpost.com/trade/27907863 - 1,66 ref (1 week)

Sales :

http://www.tf2outpost.com/trade/27919998 - 1,66 ref

1,66 ref

http://backpack.tf/profiles/76561198055088168?time=1456819200 - 3 in stock (type "manpu" in the search bar)

http://backpack.tf/profiles/76561198055088168?time=1457596800 - 1 in stock (type "manpu" in the search bar)

Conclusion :

Less than 5% change but some sellers below 1,66 ref.