I'm trying to do one costco a month
I get most of the household stuff at costco,
and as far as the food items there go: it's just me and with the freezer I can get large amounts of stuff and freeze it and take out what I need or repack into smaller packs.
I try to keep a good variety of the types of food I like -- though I would like to have some more fish in the freezer.
I also do one regular grocery store a month. sometimes its about $50, sometimes it's closer to a hundred (don't ask about the costco totals

)... It is usually one of three stores... I'm going to have to bone up in november and go to the winco... a rough store at best but there are some things I like to get there so I go about three times a year-- it's also a pack your own stuff store so it's hard to go and handle everything if you don't have a buddy.
i get my vitamins online and my candle supplies-- a couple of times a year I'll get some clothes and some household stuff if I need them
I get the kitty food at petco and I get a couple of cases because she will eat some dry food too and I can get a case to last a month.
I could get by for three months maybe longer--
I didn't get two cords of wood though this year... but I'm hoping my 3 week supply will get me through what might come up
if the power is out for more than three weeks it would mean something seriously serious and I couldn't defend two cords of firewood by myself anyway