This guy is selling an almost new Lowrance 520C (combo unit) for $450....I think it's between 7-800 new. If I had the money I'd be jumping on it as my 68C is acting flukey (might be that the transducer needs replacement)
I have the Lowrance 520c and have had no problems at all. I find Transducers are the main problem with most units, so I run two ducers and a switch box for 5 years now. Seems I go through a ducer every season, but I was told Ping adjustment can cause that, stay with factory setting, if you do raise it, be sure to put it back where it was from the factory.
