updates

The Mazda site says that map updates are free for 3 years after the car hits ~100km. Past that how much do updates cost? I can't find the information anywhere. I'm picking up my new (to me) 2016 cx-9 signature on Tuesday and don't know if it is still in the free update period.

Hi All, Does anyone know how often and when Mazda release updates on the Here (Navteq) maps? The last update was around Feb this year.