a few things we do (did- we've had to go back to the older method for a bit due to the house being on the market)....
buy in bulk things that you can, and buy them on sale whenever possible.. especially dried goods.. and we have a big stand alone freezer as well as the one in the fridge... so we buy meats that way too (chicken breast for me, other things for him)...
actually by buying less fresh produce on this diet I'm actually saving part of what used to be my grocery bill because Bill is fine with canned and frozen stuff for himself too for the most part...
I am finding that by taking careful consideration of what I buy and what we need to have in the house we both always have choices and I don't need to spend a ton. Also I only buy at the HFS or whole foods what I can't buy elsewhere and I price compare. I try to mostly go to the store by home, but I go to trader joes and whole foods every 2-3 weeks, and to the other 2 groceries in town about once a month on average... I watch the ad flyers for all of them and choose when to go and where to go based on items I need or will need soon being on sale. I have a constant inventory of things I need and stock and what we have on hand.
Good luck!
-------------------- Dietetics Student (anticipating RD exam in Aug 2010)
IBS - A
Dairy Allergic
Fructose and MSG intollerant