My grocery bill did go up...I never spent a lot of money on junk or processed foods, so I didn't see any savings there. The big change is that veggies replaced refined carbs - and veggies cost more than rice, potatoes, or pasta. This was especially noticeable during induction, when veggie portions are so controlled. If I was not full after one helping, the only thing I could have more of was meat. And filling up on meat costs more than filling up on rice. However, the extra cost has been offset by the fact that I am eating less than I used to. It wasn't uncommon for me to eat two pork chops for dinner...now I have one. I would eat two pieces of sausage at breakfast...now it's one. So my grocery bill is now about the same as it was before I began low-carbing.