If I want to put a fridge on my boat I can go buy
a 12v Marine fridge for $500 or so.

Why can't I go buy a $100 dorm size fridge from
Walmart/Home-Depot, etc and use a $50 inverter
to power it?

any advice?

I don't understand why items used on boats have
to cost more just because they are 'marine'.

-mike