The purchase price
is probably the least important question when doing this kind of thing.
There is always a certain cost of transition to messing with a system that works now. If you're going to use the weather and collision
avoidance systems a lot it could be worth it.
If you are really going to upgrade your electronics
then It is time to get a network and backbone. It is a huge hassle not only to wire but to actually get all of the features communicating. I know it is supposed to just plug-and-play, but it won't. There is a Voodoo factor in NMEA
comms between devices, even of the same brand. I spent more than a month of troubleshooting to get full RayMarine system working, but it does and I love it now. Easy to update as software
is improved too. Although every time I do an update I expect some protocol will be broken somewhere in the system.
If you are doing coastal sailing in daylight and reasonable weather then your current
C 80 in conjunction with a smart phone
will work faster, better, and more robustly then setting up an integrated system. If you sail in fishing
grounds during fog
, gale, and nighttime, or do a lot of singlehanding
then the integrated system is worth the installation