It's funny that people think they can get 1 ref for this. Also, almost half of these are strange.

Unsolds for 0.66 Ref:

http://www.tf2outpost.com/trade/23394295 - 4 days

http://www.tf2outpost.com/trade/23381038 - 4 days

http://www.tf2outpost.com/trade/23373197 - 5 days

http://www.tf2outpost.com/trade/23359741 - 5 days

http://www.tf2outpost.com/trade/23234078 - 1 week

http://www.tf2outpost.com/trade/23297130 - 1 week

http://www.tf2outpost.com/trade/23240955 - 1 week

http://www.tf2outpost.com/trade/23329883 - 1 week

http://www.tf2outpost.com/trade/23297834 - Asking for bp.tf price and unsold for 1 week

http://www.tf2outpost.com/trade/23187738 - 2 weeks

http://www.tf2outpost.com/trade/23096883 - Has 4 and not a single one has been sold in 3 weeks

http://www.tf2outpost.com/trade/22817633 - 1 month

Sellers for 0.55 Ref or less

http://www.tf2outpost.com/trade/23464226 - Relisted and unsold for a week

http://www.tf2outpost.com/trade/23477838 - New born at 2 hours

8 in the classifieds for 0.55 Ref

1 in the classifieds for 0.44 Ref

0.66 is still sellable, but it looks difficult. If you have any proof, constructive criticism, or anything else, please let me know.