Compare unit prices: what is really cheaper?
Prompt that works out the price per unit and checks whether the bigger pack is really cheaper for what you use. Paste it into an AI tool of your choice, which then does the maths.
Results depend on the tool, the model and what you enter.
Result preview
Example: written by our editors, not real AI output.
Coffee 500 g for €6.49: €12.98 per kg Coffee 1 kg for €11.99: €11.99 per kg For your use (one 500 g pack a week) the 1 kg pack is cheaper. Catch: once open, the aroma keeps for about two weeks; put half into an airtight tin.
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- one pack a week
- 2 litres a month
- for a party of 20
- stock for six months
- just once to try it
- kilogram
- litre
- 100 grams
- piece
- wash load
Your prompt
You have edited the prompt. Changes in the fields above no longer overwrite it.
This is an instruction for an AI, not the result itself.
Where this prompt works
These AI tools are a good fit for this prompt:
How to use it
- Fill in the fields or tap a suggestion. Leave out names, addresses and other personal data.
- Copy the finished prompt into an AI tool of your choice.
- Double-check the unit price on the shelf label or in the shop before you buy.
Why does this work?
The price per unit makes packs comparable, and checking it against what you really use stops you buying big packs that end up in the bin.
Tips
- Take photos of the price labels and paste the details. Many labels already show the unit price; the prompt helps when the units differ.