Classifieds :

http://imgur.com/82gdqig

2 at 1,44 ref (one of them is the OP seller at 1,44 ref, other is invalid) | 4 at 1,55 ref (3 are valid)

Seller :

http://www.tf2outpost.com/trade/27938360 - 1,44 ref

Unsolds :

http://www.tf2outpost.com/trade/27929714 - 1,55 ref (3 days)

http://www.tf2outpost.com/trade/27936938 - 1,66 ref (1 day)

http://www.tf2outpost.com/trade/27936401 - 1,66 ref (1 day)

http://www.tf2outpost.com/trade/27917101 - 1,66 ref (6 days)

http://www.tf2outpost.com/trade/27913096 - 1,66 ref (1 week)

Sales :

http://www.tf2outpost.com/trade/27931075 - 1,66 ref

http://www.tf2outpost.com/trade/27915323 - Sold to a bot, invalid?

Conclusion :

1 seller at 1,44 ref and 1 sale at 1,66 ref. Both doesn't look like a "common trade point". Going 1,55 ref flat.