Starship has charged $90m so far. That's including a healthy profit I'm sure.

SpaceX has a contract with Voyager Technologies for a 2029 launch at $90m. I would read that in the opposite direction as you, where you assume that it's costing SpaceX less than what they're charging. That's far enough away that I'm not sure they're going to be able to keep that price or be certain that they can actually launch on time or make a profit at that price.