It will do this in a single stage. It will remain a fully re-used one-piece vehicle. However, SpaceX Starship will be 25 times faster than current planes. Many people do not realize that SpaceX Starship will be twenty to one hundred times lower cost.

The estimated salary, benefits and overhead are an estimated average annual cost $200,000 for each SpaceX employee. This means that the 3,000 employees building Starships would be $600 million per year. If there were 100 Starship built each year and 20 Super Heavy Boosters, then each Starship would have about $4 million in labor and each Super Heavy booster would have about $10 million in labor. If the production rate was halved and the staff levels were the same then the labor for Starship would be $8 million and the Super Heavy booster would be $20 million.

The steel is about $200 per kilogram. The dry mass of the Starship will be about 120 tons and the Super Heavy Booster will be about 300 tons. This would be $2.4 million for the Starship if most of the material was the steel alloy. The Super Heavy would be $6 million of steel.