6 Trades on TF2Outpost:

http://www.tf2outpost.com/search/118820911

Successfully sold at 1.33:

http://www.tf2outpost.com/trade/10254474

http://www.tf2outpost.com/trade/10289162

http://www.tf2outpost.com/trade/10263685 (Possibly, trader mentioned he wanted it for this price to different buyer than one that bought it).

http://www.tf2outpost.com/trade/8825593

The following trades are the current trades that are going on, and their prices. The hours next to their names are how old they are,

http://www.tf2outpost.com/trade/11574777 ("High end Backpack.tf price", 22 hours old)

http://www.tf2outpost.com/trade/11177927 ("Backpack.tf's highest price", 2 weeks old. Nearly sold until trader realized it was dirty. Always double check.)

http://www.tf2outpost.com/trade/11569409 (1.33, 1 Day old)

http://www.tf2outpost.com/trade/11567724 ("Spreadsheet prize", 1 Day old)

The other trades are either just asking for offers, or are trading for special items. People tend to paint this item, which is why this market is so small, but with my proof, I have shown that no one is selling this item for 1 refined, and people have been successful selling it at 1.33.

Thank you for your time, and if you have any comments or concerns, please let me know.

TL;DR: This item should be 1.33 because no one wants to sell it at 1 and there are sales at 1.33. Also, this item price is 4 months old.