The state licensing exam costs $56 per attempt. That means that even if you only need to retake the state or national portion of the exam, you'll pay the full $56 for your second attempt.
You must pay the $56 examination fee to PSI when you schedule your exam. You can pay by credit card (VISA, MasterCard, Discover, or American Express), cashier’s check, or money order made payable to PSI.