My DH and I are also stricter budget wise about eating low carb.

Some things we do to buy cheap is
- each week when the fliers come in the mail I look though them from all stores and on a sheet of paper list what is on sale where. If we got the coupon section I would do the same thing. Then on our shopping day we go to several stores to get the best prices on each item. We have even been known to put a cooler in the trunk so we would not have to go home until the shopping was done. When cheap things are on sale we stock up and freeze it, and sometimes we plan our menus around items on sale.

Another thing I noticed is that the less you go grocery shopping the less you spend so we always plan breakfasts, lunches, dinners, and snacks and then go shopping for a week so we dont have to go back.