This may be a dumb question, but I'm looking at Garmin's pricing page and something doesn't make sense to me. They don't show any bundles. What if you have an Aera 760 and you run Garmin Pilot on an iPad as a backup. Do you have to pay $169.95 and $99.99 for a total ~$270/year? Does Garmin really charge you per device for database updates? People who have GTN 750Xi as a PFD and say a GTN 625Xi as a backup, are they really paying hundreds per device for annual database subscriptions?