I advise against freeze dried food for this reason. Despite that I still track a bunch of freeze dried foods in my database for the least terrible value.
Mountain House is consistently the most expensive brand and never gets a price break. They can get away with that because of their name recognition.
So far the most economical that I've found is the Wise Freeze Dried Entree Variety pack. It would cost a family of 4 "only" $350 for a week. Or even less with your 1750 calorie restricted diet.
Looks like it’s this brand. Reviews are pretty brutal. I have a handful of buckets from Mountain House brand, I usually see them at Costco once in a while. They’re both freeze dried with 25 year shelf life, better than MRE. Make sure you store enough water to hydrate meals AND for drinking needs. A little preparation goes a long way in an emergency.
I have one of these sets: http://www.bosaijoho.jp/tradefair/ct007/item_2597.html And a bucket of freeze dried food from the states so I’ll be eating mac & cheese while everyone else is waiting in line for two onigiri and bottle of mugi-cha: https://www.amazon.com/Wise-Company-Serving-13x9x10-Inch-11-Pounds/dp/B004JTASAK