Actually, Wildflower, baking is still probably one of the cheapest hobbies. Even if it triples in price, flour is cheap compared to almost anything else. A typical loaf of bread uses 1# of flour and will cost under $1.
I've noticed a big price increase at our local supermarket chain (Cub) and have not been there much in about 6 months. I used to shop loss leaders there, but now there aren't any that draw my attention. In the summer I buy produce at the farmers market, in the winter mostly at Costco and Aldi. (I don't buy much other than produce at Aldi, as there are too many artificial ingredients, too much sodium, etc. But produce is a great deal - pomegranates were 69 cents this week!) Prices at our local (pricey) natural foods store seem stable.