The point where we moved from a cooler to a fridge was when we started heading out once, twice a month. Over 2 years our fridge has paid for itself in ice costs. Especially when you get in some somewhat remote areas where ice can be scarce and they charge $5.99 a bag. IMHO if you can't afford a fridge and you don't head out but a few times a year.. just stick with a nice cooler. Some can do very well in hot weather these days.
This is the exact same way I think about it.
Getting ice is a small inconvenience, yes, but is it enough to warrant spending 4-5-6-7 hundred bucks on the solution? You can buy a lot of ice for that, or even make your own as others have said with plastic bottles and your home freezer. (I actually use square tupperware for this purpose to make decent sized blocks.)
But, if you are able to get out and enjoy life on the road or in camp areas more than once a month in the summer, then it definitely would be a good return on the investment - both in money saved on ice, and in the extra convenience factor.
I
almost bought one last year for my month-long trip to the east coast, but I knew after that trip I wouldn't use it again for at least a year. I ended up with an electric cooler instead, the type that cools to a certain level below the ambient temperature. It works ok for what it is, and the cost was quite low, I think 50 or 60 bucks. I will likely get about 2-3 years of use out of it before I will feel the need to upgrade to a true fridge/freezer.
I think if I did have one, I'd use it in the garage, even if it was just to keep the random beers cold for the next time I had company come over. Other than that, it would sit on a shelf for 11.5 months of the year.
But that's me and my life.