Classifieds at the time of posting this suggestion.

The age of the listing(s) are shown in the screenshot(s) rather than the last bump.

Unsolds and item histories are presented in chronological order according to the screenshot(s).

x6 for sale at 1.55 Refined - http://i.imgur.com/S4shAhG.png

Unsold for 3 days http://backpack.tf/item/4960905534

Unsold for 3 hours http://backpack.tf/item/5067992874

Unsold for 15 hours http://backpack.tf/item/4870713867

Unsold for 1 day http://backpack.tf/item/5114881513

Unsold for 3 days http://backpack.tf/item/4459048824

Unsold for 4 hours http://backpack.tf/item/4846355136

Outpost sellers.

http://www.tf2outpost.com/trade/28497591 - 1.66 Refined - Unsold for 1 day - Autobumper.

http://www.tf2outpost.com/trade/28495676 - 1.66 Refined - Unsold for 2 days - Autobumper.

http://www.tf2outpost.com/trade/28411909 - 1.66 Refined - Unsold for 1 month.

I am excluding all trades on Outpost that haven't been bumped in 1 day or more.