It says they are magnetic? I wonder if it'll be possible for third parties to make compatible lenses.
It's likely you will choose the lenses up front.
Similar to how when you buy an Apple Watch you choose the strap size.
You can't just "choose" prescription lenses. You need a valid prescription.
That's... complicated.
It depends on the state in the US.
Sure but Apple can just have a range of lens types and you upload your prescription.
How do you think people buy glasses online ?
Would that necessarily cost way more than the custom lenses needed for glasses?
Traditionally* VR lens fittings have been relatively affordable (Quest had them for <$100). That being said, this is Apple we're talking about here... are we perhaps getting a 'Lens Pro Max ME (Medical Edition)'?