Hearing aid purchases from Digital Hearing Outlet come with a 30 day trial and 100% money back guarantee. All new hearing aid purchases receive unlimited in-office service or three mobile service visits within one year of purchase. Being that, visits up to 30 minutes are $50. Visits exceeding 30 minutes are billed at $100 hourly rate. Unlimited in-office visits for one year is available for $250. We accept a valid hearing test by a state licensed Audiologist or Hearing Aid Dispenser in lieu of testing on delivery.