This may sound daft but it depends on the size of the tin! If I use a 6inch tin then I use 3 eggs and a small pot of cottage cheese, if I use a bigger 10inch tin then I'll use 5 or 6 eggs and double cottage cheese. They are large eggs by the way.
Also, I eat loads and loads of eggs a week, 2 on a saturday, 2 on a sunday and probably have a couple of omelettes so that's another 4. So that's 8, not including those used in meals, we had carbonara the other night and that used 3 eggs for 3 of us. So probably 9 a week!!!!