---
title: "Bulk vs Small Pack: Is the Big Pack Cheaper? | Pebble Pouch"
description: "See if a bulk pack really saves money once you count what spoils before you finish it: the real price per kg or litre and the saving per month."
url: https://pebblepouch.shop/bulk-vs-small-pack/
---

# Bulk vs small pack

The big pack is cheaper per kilo on the shelf. Is it still cheaper once you count what goes off before you finish it?

What you really pay

The small pack saves you about **£4.87 a month** at your usage.

### Small pack Cheaper for you

£1.40 for 500 g

### Bulk pack

£2.20 for 1 kg

The bulk pack beats the small one only if you use at least **79%** of it before it spoils, which means getting through about 157.14 g a day.

## Counting what you actually use

The price per kilo on the shelf assumes you use every last bit. At home, opened packs go stale, mouldy or past their date, and whatever goes in the bin was still paid for. This tool works out how much of each pack you get through before it spoils, from how fast you use it and how long it keeps:

Real unit price = pack price ÷ the amount you use before it spoils

In the yogurt example, a 500 g pot for £1.40 is finished in five days, so you pay the shelf rate of £2.80 per kg. The 1 kg tub at £2.20 looks cheaper at £2.20 per kg, but at 100 g a day half of it is left when it turns after five days, so you really pay £4.40 per kg of yogurt eaten.

### Reading the result

The pack marked "cheaper for you" has the lower real price, and the monthly figure is what your usage costs with each. The break-even line says how much of the bulk pack you need to finish for it to pay off. Things that keep for months, such as rice or washing powder, usually favour bulk; fresh food and opened sauces often don't.

## Questions

**What should I enter for "keeps for"?**

The shorter of two times: how long it lasts once opened (labels often say "use within 3 days of opening") and how long until its use-by or best-before date.

**What if I freeze or share part of the bulk pack?**

Then less is wasted. Raise "keeps for" to how long it lasts frozen, or enter only the part you keep as the bulk size and price, and the result updates.

**Does it count storage space or extra trips?**

No. It compares price and waste only. Freezer space, a heavier bag home or money tied up in a big pack are worth weighing yourself.