I have just purchased 4 C-map 2007 NT+ chart chips used on Furuno, Humminbird, Raymarine and other chart plotters. Due to due a death in the family, I will not be able to use these chips. I paid $800 for them, they are in the original un-opened plastic packaging and I will take $600 for them. They cover; 1. Cape Cod, Long Island Sound and Hudson River 2. Lake Erie, Lake Ontario and the Trent-Severn waterway. 3. Lake Michigan, Lake Huron, North Channel and Georgian Bay. 4. All the rivers from Chicago to Mobile Regards, John LeRoy Pensacola, Fl