I think the same as fulenn. Macrobiotic is just the opposite. It seems costly from the beginning because the seaweeds, miso, cold pressed oils, umeboshi, tofu, tempeh, seitan, quality malt products are more pricey. But you use only small percent of these products daily and the main base of your diet are whole grains, legumes and vegetables and these are very cheap if you compare their nutritional value/price.
I don't know about US prices, I am from Czech Republic, but I am saving 10-50% monthly from my previous expenses when I was eating not macrobiotically.
Maybe the vegetables are taking you more money when you buy very quality bio/organic ones.
But in the end, you shouldn't spend more bucks than if you were eating standard meals.
And after few years of macrobiotic and seeing the enormous healing effect - I don't care about money at all. I shifted my priorities completely.
Tell me, what's your money for, if you are not healthy?
Imagine you have some serious illness, because you wasn't eating good quality foods, for the reason you wanted to spare money for your new car (just an example). Wouldn't you want to change the past, and exchange all the money you had for the health?
Think for the future and invest your money to your health.
And sorry for my deepful funny thinking here