Classifieds at the time of posting this suggestion.

The age of the listing(s) are shown in the screenshots rather than the last bump - Unsolds and item histories are presented in chronological order according to the screenshot(s).

x1 for sale at 11.11 Refined - http://i.imgur.com/VhNLnvX.png

Unsold for 4 days http://backpack.tf/item/5040813852

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x1 for sale at 11.77 Refined - http://i.imgur.com/9NYyYlE.png

Unsold for 3 days http://backpack.tf/item/4711427600

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x2 for sale at 12 Refined - http://i.imgur.com/Rg0r0GY.png

Unsold for 17 days http://backpack.tf/item/4984262134

Unsold for 19 days http://backpack.tf/item/4744616552

Outpost sellers.

http://www.tf2outpost.com/trade/28380828 - 12 Refined - Unsold for 4 weeks.

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