Narrowing this down. 3 keys is impossible. Needs a bump, too.

Unsold for 3 keys:

http://www.tf2outpost.com/trade/15750648 (Painted TS)

http://www.tf2outpost.com/trade/15797998

http://i.imgur.com/kOmRj0I.png

http://www.tf2outpost.com/trade/15831091

http://www.tf2outpost.com/trade/15530021 (Two weeks)

http://www.tf2outpost.com/trade/14549615 (A month)

http://www.tf2outpost.com/trade/15486655 (Two weeks)

http://www.tf2outpost.com/trade/15814856 (Painted)

http://www.tf2outpost.com/trade/15743625

Sold at 2.5:

http://www.tf2outpost.com/trade/14938173 (Old, but after the last price change)

http://www.tf2outpost.com/trade/15703713

Unsold for 2.5 and lower

http://www.tf2outpost.com/trade/15095866 (One month)

http://i.imgur.com/aF8YH4n.png

http://i.imgur.com/c6ql1Wc.png

Not easy to find much proof for solds, these all have small TF2OP Histories, and it seems a majority of them are not even sold over TF2OP.

Still, I find this sufficient proof to at least remove this useless and lying '- 3' at the end of it's price.