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.

x7 for sale at 2.66 Refined, 6 of which are from the same seller - http://i.imgur.com/WQCk7Za.png

Unsold for 7 hours: http://backpack.tf/item/3704493356 - http://backpack.tf/item/4835653380 - http://backpack.tf/item/4827445040 - http://backpack.tf/item/4759035005 - http://backpack.tf/item/3538128470 - http://backpack.tf/item/4782223649

Unsold for 1 day http://backpack.tf/item/3349319128

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x1 for sale at 2.77 Refined - http://i.imgur.com/bUKA5iY.png

Unsold for 4 days http://backpack.tf/item/4971183873

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x2 for sale at 2.88 Refined - http://i.imgur.com/NFQh4hM.png - http://i.imgur.com/jDDl63v.png

Unsold for 1 day http://backpack.tf/item/4945420606

Unsold for 3 days http://backpack.tf/item/4939653536

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x9 for sale at 3 Refined, 5 of which are from the same seller - http://i.imgur.com/JH682vX.png

Unsold for 2 days http://backpack.tf/item/4976400617

Unsold for 14 hours http://backpack.tf/item/4862415008 http://backpack.tf/item/3743013176 http://backpack.tf/item/4811156506 http://backpack.tf/item/4892742375 http://backpack.tf/item/4890132352

Unsold for 2 days http://backpack.tf/item/4867036245

Unsold for 5 days http://backpack.tf/item/4954083965

Unsold for 6 days http://backpack.tf/item/4924435331

Outpost unsolds at 3 Refined.

http://www.tf2outpost.com/trade/28350921 - 3 Refined - Young.

http://www.tf2outpost.com/trade/28345509 - 3 Refined - Unsold for 2 days.

http://www.tf2outpost.com/trade/28345433 - 3 Refined - Unsold for 2 days.

http://www.tf2outpost.com/trade/28337486 - 3 Refined - Unsold for 5 days.

http://www.tf2outpost.com/trade/28331890 - 3 Refined - Unsold for 1 week+.

http://www.tf2outpost.com/trade/28324816 - 3 Refined - Unsold for 1 week+.

http://www.tf2outpost.com/trade/28283861 - 3 Refined - Unsold for 3 weeks+.

http://www.tf2outpost.com/trade/28263931 - 3 Refined - Unsold for 1 month+.

This justifies a price drop to 2.66 refined.