I wouldn't say it is monstrously expensive, but it is kind of underwhelming at that price point. It doesn't even have three degrees of freedom on its legs, which is what I would expect on a basic quadruped.
We already had a prototype with 3 degrees of freedom on the legs. But the structural complexity and price would have increased substantially. We are not releasing it at this moment.
You can check Petoi robot joint index documentation at https://docs.petoi.com/petoi-robot-joint-index