Seems fairly rare, and kind of cool looking pet. From that standpoint, it should be worth something. The increased focus buff would be nice to help train it faster, but I still don't really know if pet-related skills will ever be worth much, so the skill-gains bonus isn't all that exciting. Plus, it is a pretty common buff.
So, I guess my opinion is that the value is in however cool it looks and how cool the tricks it does are. Guess the price depends on what someone's willing to pay. Maybe a few hundred PEDs. If it's really cool and relatively rare, maybe more. But that's just my opinion and my guess.