Around 2 dozen or perhaps a few more - two for breakfast and one for elevenses every day, so that's 21, plus a post-parkrun fry-up, so that's 23, plus an omelette most Sunday lunchtimes, so 26, plus whatever I'm using in cooking for some of our main meals (low carb toad, chocolate mousse......).
I buy 7-8 boxes a week for our household of two. Husband says I'm growing a beak. He's polite like that.