Comparable, but that's not the right comparison. It's between a roof and buying your power from the power company and roof+solar. The first is way cheaper.
If we want to be green than still, a roof + 1,000 sq feet of solar out in the country connected to your house by wires is way cheaper.
Do you have references to any solutions, other Tesla's popular, pretty and expensive version?
A flush panel-only roof seems more aesthetic than shingles + raised solar, and would be good-enough for me.