I don’t know if I eat so many eggs myself but I do bake a lot, and we can easily go through some kugels on Shabbos (OK, and as a midafternoon snack erev Shabbos).
About cheap colored peppers: when they get to that price, I don’t buy them (or maybe one for a special Shabbos salad). I don’t call that cheap. When certain foods hit certain prices, we simply don’t buy them. Unless they’re staples, like sugar, flour, oil, eggs, etc. Of course the definition of staple varies. If for whatever reason colored pepper is a staple for you then kol hakavod for finding the cheapest place.
And about cottage cheese: cottage cheese freezes well so it might be worth freezing the cottage cheese in smaller portions.