Well the old sales at 7 and 7.2 aren't even in range anyway, your 1st link was actually in the previous suggestion already

You probably dont have to remove them, but you could probably put it in a different category like

Recent solds

http://www.tf2outpost.com/trade/22268410 - sold for 7.5 pure

http://www.tf2outpost.com/trade/20887749 - sold for 7.2 pure. Want also buy one for 7.2 pure: http://www.tf2outpost.com/trade/21102373

http://www.tf2outpost.com/trade/19977785 - sold for $300 ~ 9 pure with buds as $33 (don't include this because of b/os).

Old sales

http://www.tf2outpost.com/trade/18601114 - sold for 7 pure but old a bit

http://www.tf2outpost.com/trade/19374995 - sold for 7.2 pure but a bit old

http://www.tf2outpost.com/trade/19215242 - sold for 8 pure