As for the unitree robot, this one is not unlocked for development, does not have onboard GPU, and does not have an arm. If you want it, check the price they give, it's very prohibitive.
You could attach a cheap arm to it but it would also not be stable enough for AI algorithms to run it. We're researchers ourselves, we would have made it cheaper if we could, but then you just can't do anything with it.
Our platform will deliver the experience of a real AI robot, anything cheaper than that is kind of a lie - or forces you to assemble and calibrate, which we do for you here. It is just the nature of trying to deliver a really complete product that works, and we want to stand for that.
EDIT: You can take a look at our autonomous demos there, you need something reliable for these: https://docs.innate.bot/welcome/mars-example-use-cases