$126
I watched this movie again, for the first time in years. During the groceries scene, I laughed when the "grand" total for all that food came to $126, which is less than it costs nowadays for a week's groceries for me, my husband, and pets.
However, when I looked up the amount on a cost-of-living site, $126 in 1968 equals about $744 today, and $744 for a week's worth of groceries today would be about $5 per day, per person (for 20 people). I guess that would still be a bargain, but it would be $40,000 a year in 2007, just for groceries for 20 people. At least there's Sam's and Costco today, I suppose.
Can you imagine, though, factoring in the clothing, even with the younger siblings inheriting clothes from the older ones?