You may have already seen this article ' How Much Does Low Carb Cost?' from Libby at 'Ditch The Carbs' site ... but if you haven't I think it well worth a read. She writes:
"A question I am asked often is “How much does low carb cost?”. Many perceive changing from a high carb diet to a low carb diet will cost a small fortune. Read on to see why I don’t believe it does and my top tips to help you save money while you transition to low carb.
LOW CARB COSTS VS HIGH CARB COSTS
How much does low carb cost can be broken down further into short term costs and long term costs. Short term costs are your immediate expenditure such as your grocery bill whereas long term costs are medical bills, supplements and other lifestyle burdens that you cannot put a price on. There are so many factors beyond money. Health, pleasure, well being, contentment, calmness, weight and longevity to name just a few."
You can find Libby's full article with relevant links here:
http://www.ditchthecarbs.com/2016/08/01/much-low-carb-cost/
All the best Jan