i was thinking of an original pun, but could not think of one sadly.

unsold 3.88:

http://backpack.tf/classifieds/search/id/520128674bd7b83e0300001c 2 days

unsold 4 ref:

http://www.tf2outpost.com/trade/13500847 http://www.tf2outpost.com/trade/13441110

trying to sell mine at 4 ref for 3 days now, no succes

http://www.tf2outpost.com/trade/13531994 3 hours

http://www.tf2outpost.com/trade/13519154 13 hours

http://www.tf2outpost.com/trade/13150219 1 week, sold 2.

http://www.tf2outpost.com/trade/13030791 2 weeks

unsold 4.33:

http://www.tf2outpost.com/trade/13454799 2 days

http://www.tf2outpost.com/trade/13486835 1 day

http://www.tf2outpost.com/trade/13514468 bp.tf prices, 18 hours

http://www.tf2outpost.com/trade/13482123 1 day

http://www.tf2outpost.com/trade/13520031 13 hours

http://www.tf2outpost.com/trade/13448926 3 days

http://www.tf2outpost.com/trade/13396008 4 days

unsold 4.44:

http://www.tf2outpost.com/trade/13189529 1 week

unsold at 4.66:

http://www.tf2outpost.com/trade/13259744 1 week

http://www.tf2outpost.com/trade/13310508 1 week

http://www.tf2outpost.com/trade/13514748 18 hours

http://www.tf2outpost.com/trade/13528966 5 hours

http://www.tf2outpost.com/trade/13260458 1 week

http://www.tf2outpost.com/trade/13465641 2 days

http://www.tf2outpost.com/trade/13470698 2 days

sold/offers:

http://www.tf2outpost.com/trade/10593591 4 ref

http://www.tf2outpost.com/trade/13492305 4 ref

misc. trades:

http://www.tf2outpost.com/trade/13536179 someone got a good deal

notice that people can change prices on their listings, so time unsold can be wrong some times.