The unique one was a pain to sell, how about the Genuine? ;)

Sellers

http://backpack.tf/classifieds/search/872/1/0 - 1 at 4.66, 7 at 1 key

1 key (5.55-5.66 is considered 1 key)

http://www.tf2outpost.com/trade/12760886 - 1 day

http://www.tf2outpost.com/trade/11929567 - 3 weeks

http://www.tf2outpost.com/trade/12797267 - 17 hours

http://www.tf2outpost.com/trade/12817543 - 3 hours

http://www.tf2outpost.com/trade/12818624 - 2 hours

http://www.tf2outpost.com/trade/12757564 - 1 day

http://www.tf2outpost.com/trade/12659565 - 4 days

http://www.tf2outpost.com/trade/12381939 - 1 week

http://www.tf2outpost.com/trade/12738515 - 2 days (x3)

http://www.tf2outpost.com/trade/12246085 - 2 weeks

http://www.tf2outpost.com/trade/11499475 - 1 month (bp.tf prices)

http://www.tf2outpost.com/trade/12319105 - 2 weeks

http://www.tf2outpost.com/trade/12667397 - 4 days

http://www.tf2outpost.com/trade/12780066 - 1 day

http://www.tf2outpost.com/trade/12780066 - 1 day

http://www.tf2outpost.com/trade/12801283 - 14 hours

You get it, a lot of unsolds at 1 key.

< 1 key

http://www.tf2outpost.com/trade/12771247 - 5.33, 1 day

Sold

http://www.tf2outpost.com/trade/12815728 - 5 ref

http://trade.tf/fair/search/Sell/Genuine/Lacking%20Moral%20Fiber%20Mask/all/2 - Proof that above was 5 ref

http://www.tf2outpost.com/trade/12809381 - 5 ref

http://bazaar.tf/trade/310691 - 5 ref

http://www.tf2outpost.com/trade/12781942 - 1 key

http://www.tf2outpost.com/trade/12758596 - 1 key

http://www.tf2outpost.com/trade/12755575 - 1 key

http://www.tf2outpost.com/trade/12816133 - 5 ref

Conclusion

Solds at 5 ref and 1 key. Vote accordingly.

Help / Consturctive Criticisim / Additional Proof / Counter-Proof is ALWAYS welcome! :D