I've tried selling some for 10gp per (although the tradebot insists it has recently been listed at 17gp per), but noone wanted it.
Maybe folks already know this, but horned can be used to fill regular leather BODs. I would usually just burn through my horned leather after using up my regular. Kahun's 10gp per price is a great deal, considering I've had folks buy regular leather from me for 10 per as well.