The exact cost of filing a lawsuit varies with the length and complexity of each case. It takes a significant financial investment to investigate the wrongdoing, use the legal discovery process to obtain evidence, consult with expert witnesses, obtain class action certification, and fight the case in court. Class action cases are typically taken on a contingency fee basis, which means that parties to the class action don’t have to pay the attorney unless they’re successful. If they do get you some compensation, then they take a percentage of the settlement. Not every law firm or attorney has the resources to file a class action lawsuit, it is important to contact a skilled Class Action Layer in your area to discuss your options.