... My friends and I get together every 6 - 10 weeks and make meals to put in our freezer that "mimics" super suppers, but because we do it ourselves, we control the ingredients and the cost is MUCH cheaper. We pick 6 - 8 recipes, everyone "orders" how much of much they want of each recipe (or order none of something if your family doesn't like it). We created formulas in excel where we input the recipe and the number of orders and it tells us how much of each ingredient we need to buy. We divy up "prep work" (i.e. shopping, baking chicken in advance, browning hamburger, etc) and then get together and put them all together. Each person tends to end up with an hour or so of prep and 3-4 hrs of "meal making". You then go home with what you 'ordered' - often I take home 12 - 15 meals. Our family is smaller (DH, me, DD8 and DD4) so an 8x8 pan feeds us plus typcially leaves a lunch for one of us to take to work as a leftover. Some others need a 9x13 pan so they "order" 2 8x8's and we assembly theirs in a 9x13 pan -- so it works great for everyone. Everyone brings their own pans - some use the ovenware pans, some use the disposable aluminum pans.
We typcially eat 3 of them a week and it REALLY helps at dinner time. Then it is easy to supplement the other nights with making spaghetti or "refrigerator clean out" (eating all the leftovers), or homemade pizza, etc that aren't very "prep" intensive.
We've gotten really creative with what we make - so it isn't all casseroles - soups store/freeze in ziplocs great, sloppy joes, bbq beef, burrittos, sandwiches that we grill, marinated meat to put on the grill, even side dishes.
Sorry so long, but maybe another idea to consider that would give the same benefit at a more budget friendly method (plus healthier!!)