I need one too. My old one was 20 years old and it gave up the ghost last summer. I need it mainly for depth because we're on a river that gets shallow in spots sometimes and it gets tricky trying to navigate our pontoon through those areas. I started looking last year on Amazon and looks like the range from around $100 to $1000s of dollars. Thanks for reminding me I needed one, lol. I'll be watching to to see what others post.