Whole collars made out of real fox fur in 8 different colors for $15 shipped. I haven't tried these, but my guess is they are made from tail sections stitched together. It looks like a great deal over buying tail cross sections or fox zonkers at $5-$7 a pop.
http://www.ebay.com/itm/151822244218
http://www.ebay.com/itm/151822244218