Work out best buy unit price instantly with clear inputs, formula shown and shareable results.
Comparing pack sizes fairly means reducing each to a price per unit: price divided by size. The lower unit price is the better buy, assuming you will use the whole pack.
Unit price
unit price = price / size
0.007 versus 0.0062 per unit, so the larger pack is about 11.43% cheaper per unit.
Only if you use it all. Waste from an oversized pack can easily outweigh the per-unit saving.