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).

x2 for sale at 6 Keys - http://i.imgur.com/eUU2Zit.png

Unsold for 3 days http://backpack.tf/item/5089468206

Unsold for 4 days http://backpack.tf/item/5062820165

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x1 for sale at 6.5 Keys - http://i.imgur.com/gHzUTyQ.png

Unsold for 6 days http://backpack.tf/item/5058398034

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x4(2) for sale at 7 Keys - http://i.imgur.com/mLCL1lM.png

Unsold for 11 hours http://backpack.tf/item/5058475955

Unsold for 13 days http://backpack.tf/item/5019608360

Unsold for 2 days http://backpack.tf/item/5084706427

Unsold for 5 days http://backpack.tf/item/5075392990

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x1 for sale at 8 Keys - http://i.imgur.com/aburYZz.png

Unsold for 13 days http://backpack.tf/item/4976526476

Outpost sellers.

http://www.tf2outpost.com/trade/28468226 - 7 Keys - Young.

http://www.tf2outpost.com/trade/28458280 - 8 Keys - Unsold for 4 days.

I am excluding all trades with their price as "bp.tf price" as the item has a flexible price making it an unclear price.

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