Pricing will depend on the state in which you choose to incorporate. The corporation will also need to meet certain requirements that are likely to cost some amount — for example, hiring a lawyer to help draft bylaws or recruiting a staff member to organize and maintain notes for every shareholder meeting.
The corporation may need to hire an accountant to help file more complex tax forms or create and submit its annual reports to the secretary of state. The total cost to create and maintain a corporation will depend on the cost of these elements, in addition to any periodic business registration, licensing and permit renewals.