This sample removes the $format query option and changes the Accept header to application/json. When you include the sample project and adding the JSONPSupportBehaviorAttribute to your data service class enables the service to handle the $format query option $format=json.
The cost to incorporate in California also involves filing an initial report, called the California statement of information within 90 days of your incorporation, which costs a state fee of $25 or $20 for a non-profit corporation plus a $75 service fee.
An s corp is not subject to double taxation as a c corp is. That means that an s corp's revenue is not taxed at the corporate level. It's only taxed when paid out as salaries or dividends to shareholders. That alone could save an s corp hundreds of thousands of dollars.