Why the Price of a Single Pack Differs from Buying in Bulk
https://nicotinenotebook.clearminster.com/posts/why-the-price-of-a-single-pack-differs-from-buying-in-bulk
Buying in bulk lets the store reduce packaging and shipping costs per unit, plus it encourages larger sales, so they pass some savings to you. A single pack covers more overhead per item, like individual handling and display space, which makes it pricier.