Seriously, does anyone know why the huge price difference of the magellan nav. system. A lot cheaper if you buy on Ebay than if you buy from brandmotion etc. If I were to buy from brandmotion is that system going to have all the updates compared to the one being sold on Ebay? Does anyone know this answer before I decide where to buy mine. Christmas bonuses just came out and I am trying to decide either a navigation system or a exhuast? Any ideas? Thanks