Classifieds at the time of posting this suggestion.

Unsolds are based on how long the listing has been up; Listing has been up 5 days and item been in the sellers inventory for 8 days? It has been unsold for 5 days.

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 13 Refined - http://i.imgur.com/g3vbkv5.png

Unsold for 1 day http://backpack.tf/item/872411191

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x1 for sale at 13.22 Refined - http://i.imgur.com/0u4Xqct.png

Unsold for 4 days http://backpack.tf/item/1036470721

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x2 for sale at 14 Refined - http://i.imgur.com/nmAfSRJ.png

Unsold for 1 day http://backpack.tf/item/1751080510

Unsold for 2 days http://backpack.tf/item/1724599537

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x3 for sale at 14.88 Refined - http://i.imgur.com/J7z9s9x.png

Unsold for 21 days http://backpack.tf/item/898834974

Unsold for 8 days http://backpack.tf/item/867812904

Unsold for 13 days http://backpack.tf/item/868208234

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x5 for sale at 15 Refined - http://i.imgur.com/V8cPaos.png - http://i.imgur.com/9lS5uYG.png

Unsold for 1 month http://backpack.tf/item/887904444

Unsold for 9 days http://backpack.tf/item/892822386

Unsold for 1 day http://backpack.tf/item/886643026

Unsold for 11 hours http://backpack.tf/item/896610889

Unsold for 7 days http://backpack.tf/item/876569790

Outpost sellers.

http://www.tf2outpost.com/trade/28355958 - 15 Refined - Unsold for 1 day.

http://www.tf2outpost.com/trade/28335947 - 15 Refined - Unsold for 1 week.

http://www.tf2outpost.com/trade/28251967 - 15 Refined Unsold for 1 month.

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