One thing more.
i buy the carry case that is the same of the Garmin Zumo 660, so you can search for that because it is sure that will be more cheaper than one for an aeronautical Gps.
It is the same for the battery.
Other item that i have bought is the screen protector here.
18x Schutzfolie UltraClear Garmin Aera 500 en venta en eBay.es (finaliza el 18-may-10 10:20:33 H.Esp)
I will try it now, so I will comment here.