OK, maybe I'm a bit naive about this so here goes. I sail on the Chesapeake Bay out of Annapolis. On board and at the helm I'm usually running my trusty Garmin GPSmap 540 that I bought like 7 years ago? Not really sure when but the unit is discontinued. It's been working fine and I've had it, like I said, for at least 7 years so it dawned on me the other day, after I passed one of the newer "interpretive" yellow buoys near Annapolis that wasn't marked on my GPSmap 540 that maybe it was time to update the unit. I sent an email about doing this to Garmin and they directed me to purchase a BlueChart G2 update card from them but when I looked and looked around some more else where on line I was surprised to see that the price for one that covered the bay was around $250! That's more then half of what I paid for the unit itself.
Am I getting the wrong info here and coming to the wrong conclusion? Do I really need to update? Is there a cheaper way? (I'm over 60 so I have no problem saying "cheaper" rather then "economical") Advise on this matter would be appreciated.