In general, our customers rarely ask for yearbooks under 60 double-sided pages, i.e. 120 sides. Some of our customers even ask us for yearbooks of 550 sides (225 double-sided pages). It all depends on the sections you want to integrate.
The good thing to know is that the more pages you have, the lower the price per page. But in reality, there is no real rule to follow, we adapt to all requests!