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).

x2 for sale at 6.4 Keys - http://i.imgur.com/UcUURi6.png

Unsold for 2 days http://backpack.tf/item/345804141

Unsold for 2 days http://backpack.tf/item/347827827

-

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

Seems to have sold - http://backpack.tf/item/353070937 - Keep in mind it has a paint worth 1.1 Keys.

-

x1 for sale at 6.65 Keys - http://i.imgur.com/lGjImU9.png

Unsold for 2 days http://backpack.tf/item/345366308

-

62 for sale at 6.75 Keys - http://i.imgur.com/t0nSz3q.png

Unsold for 5 days http://backpack.tf/item/345481182

Unsold for 12 days http://backpack.tf/item/353198544

-

x5 for sale at 7 Keys - http://i.imgur.com/nIjkJaO.png - http://i.imgur.com/KImR1FF.png

Unsold for 3 days http://backpack.tf/item/346157520

Unsold for 8 days http://backpack.tf/item/345573106

Unsold for 1 month http://backpack.tf/item/364186868

Unsold for 18 hours http://backpack.tf/item/346102644

Unsold for 4 days http://backpack.tf/item/347164963

http://i.imgur.com/DaXZ5rJ.png - 1 buyer for 6.6 Keys, hasn't had 1 in their inventory since the creation of that listing - http://backpack.tf/profiles/76561198021383012#!/compare/1456732800/1472083200

Outpost sellers

Everything on Outpost is priced higher due to paints.

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