No, I think you're right on for a 0.1 version. The basic nutrition (most important) is there, and you now have a good list of foodstuffs to go by. I think 0.2 should allow for some diversification (trade these two foods for these two, at an extra cost of xx). Version 0.3 can then work on some basic recipes. Also consider things like freeze-dried fruit (easy to rehydrate to put inside oatmeal) and vegetables (make good salad toppings) to add diversity.
I think most people would allow sale prices if you can prove they're on a cycle. For example, sacks of yellow onions go on sale every 3rd week at the store I frequent, which lines right up with my usage habits.
Forgot to mention: I spent 4-5 years in which I ate oatmeal every day (and some nights) while in the process of eliminating debt. It's highly versatile; you can change the flavor dramatically with the addition of different fruit, spices, and nuts/seeds. It stores in bulk for long periods of time. It is very easy to prepare. It is highly cost effective, is fairly nutritious alone, and easily keeps you full for hours on end. I really consider it a superfood in terms of cost vs. nutrition. Add some flax seeds, apples, cinnamon, and a bit of honey and not much can beat it.
I think most people would allow sale prices if you can prove they're on a cycle. For example, sacks of yellow onions go on sale every 3rd week at the store I frequent, which lines right up with my usage habits.