Best thing to do -- check local shops near you first hand. RepairPal can give you an estimate and range, but nothing exactly like what a shop near you will actually charge to actually do the job. Consult some shops and compare.
RepairPal Certified shops can diagnose and repair your 2015 Nissan Altima. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.