That's supposed to be the promise of electric aircraft: almost all serviceable parts go out the window, just as with electric cars. Construction and maintenance costs are reduced to a fraction of what they are for mechanical systems. And because these are VTOL, ground expenses are likewise reduced.

Batteries are still rather expensive, though, and energy density sucks. The advantages may not be able to compensate, at least not sufficiently to hit a price point that appeals to a wider, non-millionaire market.