....we find food costs to be a mixed bag in Florida. A few fruits and vegetables are marginally cheaper (northern Florida), even driving into the "interior", the fruit was quite expensive. Since we cook almost every meal (we rarely go out to eat), the food in general (canned, veggies, meats, fish: we really don't eat deserts) were marginally cheaper than Quebec. Not enough to factor into our cost of living compare. The gas on the other hand was so cheap compared with Quebec, we always think we are on another planet. We don't buy many clothes. We perhaps go out to a paid entrance place 2 or 3 times over a month (museum, to visit a 16th Centure Spanish galleon, visit interior of a lighthouse, the odd National Sheashore). Reading around the pool on a lounge chair, trekking the beaches (10s of miles a day), visiting, walking through old St Augustine, etc, etc, don't cost anything.
Our biggest costs are: rental of condo (or, long term campsite); then food; then fuel and vehicle run costs; then health insurance. We have very little expenses after these. Beer and wine cost very little in the South, so these are a small ratio of total expenses (maybe $30 a week).