Kind of making a counter suggestion here, referring to this - http://backpack.tf/vote/id/552fb37eba8d88b0448b5429 because that 3 ref sale looks like an outlier or then it was a "collectors" level.

Buyer at 2 ref - http://www.tf2outpost.com/trade/25728535

Sales:

2 ref - http://www.tf2outpost.com/trade/25721540 (trade doesn't mention it, but he was selling for 2 refs before it was sold)

1.88 ref - http://www.tf2outpost.com/trade/25664976 (credits to The_Bacon_Ruler)

1.55 ref - http://www.tf2outpost.com/trade/25719896

Sellers:

2 ref - http://www.tf2outpost.com/trade/25726426

1.66 ref - http://www.tf2outpost.com/trade/25731746 (4 hours, high end bp.tf price)

1.66 ref - http://www.tf2outpost.com/trade/25730677 (5 hours)

1.55 ref - http://www.tf2outpost.com/trade/25733532 (young)

1.55 ref - http://www.tf2outpost.com/trade/25705597

Conclusion

No sellers for 1.44 refs, sales between 1.55 - 2 ref and one buyer at 2 ref.

This is my first suggestion ever, criticism is welcome doesn't matter if it's positive or not. And please tell me if I have done something wrong and I will correct it.