Sold at 2:

http://www.tf2outpost.com/trade/25680398 not in bp

Sales at 1.66:

http://www.tf2outpost.com/trade/25695578 "bp.tf prices", not in bp - quicksell

http://www.tf2outpost.com/trade/25672051 "bp.tf prices" not in bp, sold yesterday so not a quicksell

Sellers at 1.66:

http://www.tf2outpost.com/trade/25661936 horribly bumped

http://www.tf2outpost.com/trade/25660800 "bp.tf price", horribly bumped

Buyers at 1.66:

http://www.tf2outpost.com/trade/25379027

http://www.tf2outpost.com/trade/25268345

Not sure about the range tbh. Of the 4 1.66 sellers, one quicksold and 2 are unbumped, so only one is valid. That plus 2 buyers at 1.66 suggests it should go up. Buttt there is one valid sale at 1.66 so leaving it in for now.