The sites below each provide basic information for researching a franchise, including start-up costs and fees. In addition, you can try a google search for the name of the franchise which may lead you to the company's own franchise page. Many companies will also send you additional information if you reach out to them directly, or through an online form. Some also provide comparison information between their company, and another franchise. Examples of company pages:
A&W: https://www.awfranchising.com/
Sonic: https://sonicfranchises.com/
Motel 6: https://g6hospitality.com/franchising/