I do born, thanks for asking, but I have the opposite problem. Because our diets are quite limited we can't buy any of the cheap stuff. So no sausages with wheat in, we have to buy the 97% meat ones. Gluten free fish fingers are 83p per 100g compared to the normal sort which are 38p per 100g. We can't buy the cheap pizzas, but have to buy the weird gluten free sort which are £3.50.
Also because ds and I have different limited diets, and dh has no limitations but likes a lot of flavour, we end up cooking three different meals every time.
The major problem with that is that it's hard to buy a packet that does for one person, but I'm getting better at buying things that I can easily freeze and take enough for one person out at at a time. Also dh is being more obliging about eating the same as ds these days. That was a frugaleer victory some time back.
I drink bottled water, which adds up, as I can't seem to have chlorinated water, but ds has given up having cartons of juice, which helps a lot.
We can manage the cost tbh, but I worry about people who are on a low income and have food intolerance problems. I'm not really sure how they manage tbh.
I've analysed out food bill inside out, and it's the meat that really adds up. We do like meat though. I just don't seem to work without it, and oddly, most of the critical vitamins are most abundant in meat.