Loads of 7 key sellers, some even dropping below that.

http://www.tf2outpost.com/trade/14195138 8 Keys (2 Days, hasn't been bumped)

http://www.tf2outpost.com/trade/14206630 8 Keys (2 Days)

http://www.tf2outpost.com/trade/14208845 8 Keys (2 Days)

http://www.tf2outpost.com/trade/14208719 8 Keys (2 Days)

http://www.tf2outpost.com/trade/14221409 8 Keys (1 Day)

http://www.tf2outpost.com/trade/14242872 8 Keys (1 Day)

http://www.tf2outpost.com/trade/14255324 8 Keys (12 Hours)

http://i.imgur.com/lvtbiJE.png 6.5 Key seller

http://www.tf2outpost.com/trade/14263266 (Same 6.5 key seller just in outpost)

http://www.tf2outpost.com/trade/14258451 Sold for 6 keys

http://www.tf2outpost.com/trade/14252942 6 Keys 4 ref

http://www.tf2outpost.com/trade/14246805 5-6 Keys

http://www.tf2outpost.com/trade/14244794 6 Keys

http://www.tf2outpost.com/trade/14235740 5.5 Keys

This is my first suggestion in a couple of months so refresh my memory if I left anything out or anything has changed.

(Sorry for the 1st post, I had accidently pressed the save button when I was still adding in proof)