Taking out high range. There's still many buyers actively buying for 5 refined either to flip now or store for later, and I could not find enough support for a range below 6 refined, so I am not going lower.

Sellers:

http://www.tf2outpost.com/trade/27650471 6 ref

http://www.tf2outpost.com/trade/27649236 6 ref

http://www.tf2outpost.com/trade/27625761 6 ref

http://www.tf2outpost.com/trade/27645310 6 ref

http://www.tf2outpost.com/trade/27650290 6 ref

http://www.tf2outpost.com/trade/27645439 6 ref

http://www.tf2outpost.com/trade/27647525 6.55 ref

http://www.tf2outpost.com/trade/27639565 7 ref

http://www.tf2outpost.com/trade/27647609 7 ref

Classifieds: http://i.imgur.com/TXjdfnQ.png

Many sellers for 6 refined, 1 buyer for 5.33 refined and 2 buyers for 5 refined

Screenshot of my trade history for the last 3 days: http://i.imgur.com/aRKWUWn.gif (I think 25 or so bought for 5 refined each)

There would be more, but I ran out of metal. Started buying from the Steam Community Market which is actually more cost effective.

Conclusion: Just cutting out top of the range now. If there were not still active buyers for 5 refined or higher.