buying used locator
I am sure you can pick up a good unit used but that is not for me. For some reason every time I buy something used it has something expensive wrong with it. I think I just have bad luck. I have been burned enough times that I try my hardest go new for the warranty.
this thread has some opinions and links to some items on sale
if you find one you think would serve your needs, maybe ask about that model or mfg...
only reason I would buy used would be if I wanted to take a chance on a high end model for a entry level price...
here's a link to that other thread
Other unit bought from a friend. Again no issues.
I just bought a new humminbird. $300 will get you a sonar/GPS combo in color. For that price can't go wrong.
I'd possibly look at eBay if buying used, but I wouldn't personally consider anything over 5 years old.
I've sold a few on eBay also. I always describe them accurately. So were the ones I purchased.
..Gotta keep that feedback score at 100%.
If you go that route. Make sure the person has a lot of transactions as a seller and a high feedback score.