Tesla Solar Roof... crazy estimate

Just received a quote for a 23.5KW Tesla Solar Roof, with 2 power walls.... grand total WITHOUT the gutters/panels/charger ... $315k !!!! I'm in Maryland. Even with the 30% fed tax credit, it's still $220k !!! That's an impossible ROI.

The 23.5KW should meet 100% of my electrical need. My roof is sizable at 5400sqft .

When I initially looked at the Tesla roof about three or four years ago, the price came in at about $140 K. Which I thought even at that time was a obscene but was only 2X cost of a new roof so I saw the ROI on that as obtainable. with the federal government given a 30% tax credit, it seems like these contractors are inflating the price by nearly the exact amount of tax credit, which means zero savings for the homeowner.

Thought???