In N. Chas. you might want to try West Marine…nice guys and good service. They have a lot of good stuff including electronics and charts. …got my Navionics chip from them…good guys…give them a shot. They will match prices with other stores and have a lot of things you cannot find anywhere else. They are are one of my best resources for things that Wally World doesn’t sell. Good, qulity stuff.
PioneerLouie
Pioneer Venture 175, Johnson 90
Summerville, SC