Much rarer than the normal unique version despite having a similar amount in existence...

None at all on the Classifieds, Outpost, Bazzar or Exchange.tf!

Recent sale:

http://www.tf2outpost.com/trade/25195220 1 ref

Quickbuyers:

http://www.tf2outpost.com/trade/25062323 1 weapon

http://www.tf2outpost.com/trade/25260892 1 weapon

As there is litterally no market for these, with a sale at 1 ref, and a pair of quickbuyers at the current price showing how it is a quicksale, 1 ref should suffice. LLAP my friends.

Well, as there are no new sellers on Outpost or the Classifieds, no new sales, and the buyers are still buying, the suggestion remains valid.