Could you replicate every single one of those features with a google cardboard? I think so
This is so far from the truth I just have to assume you’re making a “joke” and not an apple hater who’s too fanatical to form their own opinions.
The vision costs a shit load of money because they’ve put an abundance technology and R&D into the product to make it capable of things no other VR/AR headset is capable of. By all accounts the screen resolution, response rate, 3D tracking, and gesture recognition create an experience that other headsets can attempt to mimic but will fall short of. Watch MKBHD’s videos on it, it’s genuinely a really impressive piece of technology.
And yes, they charge more because they are Apple and they know their hoards of loyal followers will buy anything they make.