One day before the last major election I'll participate in, here on the mainland.
I've gotten into watching "So you want to move to Hawaii" videos over the last day or so. I'll stop a video to check their numbers, for instance one cited "MIT's cost of living survey" and according to it, I need $38-odd to live OK here in Santa Clara County, and $30-odd in Honolulu County.
I assume this means MIT considers the same cost of living in each place. And I also assume MIT meant their survey for Real Americans(tm) and Real Americans(tm) need certain things or it's not considered "living". Such as a new or newish car, a temperature-controlled environment, and the standard American foods/holy sacraments such as breakfast cereals, a quart of milk a day, meat at every meal, etc.
To follow the Standard American Diet For Real Americans(tm) one must eat foods that are imported to Hawaii. Even if you're eating fish, it must be imported fish, preferably in the form of fish sticks. If you're eating bananas, they must be bananas from South America, exported to the US mainland and then shipped to Hawaii.
You must absolutely not eat local foods, partake of local cuisine, or differ in any way in your eating habits from a person living in the Midwest of the mainland US. The one, sole, exception is you may go to Germaine's Luau, "The Best Luau In America" where you'll get a tiny dish of poi, which you may take a tiny bit of, say "Yuck!!" have a little roasted pork which really doesn't taste like actual kalua pig, a little "lomi salmon" (salmon is not a Hawaiian/Polynesian fish, and it's basically ceviche, as found in Mexican restaurants in California) and so on.
So, "Living in Hawaii is expensive!" and that is with these restrictions in place. And yet, even with those restrictions, Hawaii ends up being about 20% cheaper than where I am now, according to MIT.
What's really going to make it work is knowing how to live, and eat, like a local and being retired.