Thanks for the help, Shuffle Spy.

<Sales>

[2.66] http://imgur.com/a/MrDRC

[4.00] http://imgur.com/a/YlMfY - Sell listing capped at 2.66 refined.

Classifieds: http://backpack.tf/classifieds?item=Cosa+Nostra+Cap&quality=6&tradable=1&craftable=1&australium=-1

Screenshot of Classifieds: http://imgur.com/a/Rlzxu

<Sellers>

[2.11] http://backpack.tf/item/4784653048 - Countered by multiple buyers

[3.00] http://backpack.tf/item/5062834715 - http://backpack.tf/u/76561198127181811 - Listed 3 hours ago, young

[3.00] http://backpack.tf/item/3023181931 - http://backpack.tf/u/76561198076658566 - Listed 4 hours ago, young, painted

The sellers still at 3 refined show that 4 refined seems to be a bit of an outlier, but does help suggest that this needs a rise, as does the multiple buyers at 2.11 refined.