gps garmin 300

hello everyone, I went to look for this forum and found there are so many, whew, who knew? Any way first, to the administrators or anyone for that matter. How do I create a new thread? I found how to do it in this section, but for anywhere else I can't seem to figure that one out. Second...

So, the GPS in our 2011 300 Limited flashed that the map was a year old and should be updated by visiting www.garmin.com/chrysler. How is it that I can buy a lifetime update for my portable GPS for <$100 yet a single update for the 300 is $149? Not that I want to pay this much every year, but...