How much does it cost to become a U.S. citizen?

Can you provide me with an overview of the expenses associated with obtaining U.S. citizenship? Are there any upfront costs or fees that need to be paid? How much do the various application forms and background checks typically cost? Additionally, is there a fee for the naturalization ceremony or any other mandatory steps in the process? Understanding the financial implications is crucial for those considering this path, so any detailed insights you can offer would be greatly appreciated.