For Chapter 7 bankruptcy, a fee of $306 is collected upon filing (http://www.uscourts.gov/FederalCourts/Bankruptcy/BankruptcyResources/BankruptcyFilingFees.aspx). However, knowing whether filing for Chapter 7 is a good choice or not depends on different factors such as the amount of debt versus the income received, among others that may be considered. Based on the information you have given, your mother probably will benefit from filing for bankruptcy, provided that she is actually eligible. Consult with a bankruptcy attorney for a more detailed advice regarding this matter.