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.

x1 for sale at 1.66 Refined - http://i.imgur.com/AXjnYHJ.png

Unsold for 1 day http://backpack.tf/item/1672436887

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x3 for sale at 1.77 Refined - http://i.imgur.com/uMjesPt.png

Unsold for 3 days http://backpack.tf/item/4957835371

Unsold for 15 hours http://backpack.tf/item/4953477823

Unsold for 2 days http://backpack.tf/item/2746587907

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x2 for sale at 1.88 Refined - http://i.imgur.com/okuPyRQ.png

Unsold for 1 day http://backpack.tf/item/4957410622

Unsold for 16 days http://backpack.tf/item/1720567593

Sellers below 1.88 Refined.

http://www.tf2outpost.com/trade/28335403 - 1.77 Refined - Unsold for 5 days.

Unsolds at 1.88 Refined.

http://www.tf2outpost.com/trade/28343434 - 1.88 Refined - Unsold for 2 days.

http://www.tf2outpost.com/trade/28296998 - 1.88 Refined - Unsold for 2 weeks.

http://www.tf2outpost.com/trade/28310227 - 1.88 Refined - Unsold for 2 weeks.

Buyers.

Only quick-buyers on Outpost, no buyers on the Classifieds.