Your sellers below 4.33:

http://www.tf2outpost.com/trade/22804546 Very young

http://www.tf2outpost.com/trade/22802734 Sold in less than 4 hours.

http://www.tf2outpost.com/trade/22773585 Sold Not anymore in backpack

http://www.tf2outpost.com/trade/22800041

http://www.tf2outpost.com/trade/22771999 - 3.55 Sold it 1 day ago or more since it isn't in his backpack.

http://www.tf2outpost.com/trade/22753915 Sold. Not anymore in backpack, he still has one but it's level 99, not the one in the trade.

http://www.tf2outpost.com/trade/22766136

http://www.tf2outpost.com/trade/22754597 Not bumbed since the trade was created 3 days ago.

http://www.tf2outpost.com/trade/22728395 - has 2. Not bumbed since the trade was created 4 days ago

http://www.tf2outpost.com/trade/22717093 Not anymore in his backpack. Sold 4 days ago without even needing to bump the trade.

From the looks of your links 4 ref could be easily considered a quicksell, but again after seeing that Archimede suggestion pass, I think this will pass too, since they are very similar case.