Navtronics is located in Portsmouth, NH. Their website is
www.navtronics.com. I dealt with a salesman named RJ. The total cost for the A65 gps and digital depthfinder will be approx $3100. $2100 for parts and $1000 for Installation ,travel and freight. This includes the navionics map software. I saw the A65 at the Boston Boatshow and was very impressed. The next step up would be a unit with radar costing $6000. I personally don't need radar on the lake, we dont go out in bad weather.
www.raymarine.com details all of their units and options. Hope this helps.
Tom