I am working on significantly improving this this month, so don't have a full month to report. I had been averaging $70/week at Aldi's, plus maybe another $25/week for fill-in-the-holes that Aldi's doesn't have. But today was a total fail, because I was supposed to leave town this AM and my trip canceled last-minute, and suddenly I now have a week's meals to make and am apparently feeding 8 people for the Superbowl today. So Aldi's was $100, and I think DH dropped close to that at Wegman's. Just poor planning and rushing (but at least we bought stuff that will get us through half of next week). So basic groceries I would guess $450, plus $25-40 in staples from Amazon. Numbers include food, household supplies, OTC meds, and cat litter, but not cat food (special vet kidney diet).
We are 2 adults, one teen, one preteen in a growth spurt. We eat very well - generally low-carb, lots of meat/dairy and fresh fruit/veg. Recovering addict from Wegman's deli and cheese shop -- current version is one thing at a time instead of multiples, and more Aldi's havarti instead of Wegman's Pierre Robert. In addition to the above, my real luxury is milk/butter/buttermilk/eggs from the dairy, which probably runs $100/mo on my new reduced approach. I am still figuring out where this will land -- I used to spend a ton on the grass-fed meats and fancy OJ, but am now cutting it down to the things where I can really tell the difference and the $ is worth it (milk/butter/buttermilk -- Aldi's $0.69 eggs are too good of a deal to justify $3.95 on the dairy's version, and the dairy's OJ is so expensive it makes name-brand fresh-squeezed look cheap).
So all in all, I am shooting for $600/mo. on groceries/supplies. We have also significantly cut back on eating out - so far, one Friday family dinner out and one Saturday date night fancy restaurant. My goal is not to cut that entirely, but just to cut out "cheap" meals -- I.e., no dropping $50 because I didn't plan/didn't feel like cooking/etc.