Several available at 1.2:

http://www.tf2outpost.com/trade/10588740 unsold at 1.2 keys for 1 week

http://www.tf2outpost.com/trade/10677509 unsold at 1.2 keys for 3 days

http://www.tf2outpost.com/trade/10693430 unsold at 1.2 keys for 3 days

http://www.tf2outpost.com/trade/10743676 unsold at 1.2 keys

http://www.tf2outpost.com/trade/10765030 unsold at 1.2 keys

http://www.tf2outpost.com/trade/10723422 unsold at 1 key for 2 days

Doesn't seem to sell at 1.4-1.5:

http://www.tf2outpost.com/trade/10388449 unsold at 1.5 keys for 2 weeks

http://www.tf2outpost.com/trade/10634755 unsold at 1.5 keys for 6 days

http://www.tf2outpost.com/trade/10670829 unsold at 1.5 keys for 4 days

http://www.tf2outpost.com/trade/10672195 unsold at 1.5 keys for 4 days

http://www.tf2outpost.com/trade/10682681 unsold at 1.5 keys for 3 days

http://www.tf2outpost.com/trade/10088196 unsold at 1.4 keys for 4 weeks

http://www.tf2outpost.com/trade/10353903 unsold at 1.4 keys for 2 weeks

http://www.tf2outpost.com/trade/10659731 unsold at 1.4 keys for 4 days