Calculate the real unit saving
Compare equal units and multiply the difference by the quantity you will genuinely use. A large percentage on a low-cost item may still be a small cash saving.
Account for waste
Perishable products, changing preferences and damaged storage can erase a bulk discount. Estimate usable quantity rather than pack quantity.
Consider the alternative use of money
Buying more now ties up money and space. The choice is strongest when demand is predictable and storage is suitable.
Practical checklist
- Check best-before and use-by information.
- Do not bulk-buy an untested product solely for the discount.