I sell my product in 250 g, 500 g and 1 kg packs: how do I check that the bigger packs really are better value for customers?

Example: a price ladder with a flaw

A store sells dates in three sizes: 250 g at 35, 500 g at 72 and 1 kg at 120. Entered as they are:

• 250 g: 140 per kg, 16.67% more than the best.
• 500 g: 144 per kg, 20% more.
• 1 kg: 120 per kg, the Best value.

The flaw is plain: the middle pack costs more per kilo than the small one. A customer buying 500 g pays more than they would for two small packs, 72 instead of 70. This kind of slip happens when each pack is priced on its own without looking at the whole ladder.

The fix

I lowered the middle pack to 65 and ran it again: 250 g at 140 per kg (16.67% more), 500 g at 130 per kg (8.33% more), and 1 kg at 120 per kg. Now the price per kilo steps down with each size, and customers see a clear reason to pick the bigger one.

Steps

1. In the Unit-price comparison tool, enter each size as an option with a clear name such as Quarter kilo, Half kilo and Kilo.
2. Type the selling price and net weight of each size.
3. Read the order of the per-kilo prices: it should fall with each larger size.
4. If it does not, try new prices straight in the fields until the ladder is right; the result updates with every change.

Do not forget your profit on each size

Lowering the middle pack's price may fix the ladder but cuts its profit. Smaller packs also tend to cost you more per kilo in packaging and labels. So cost each size separately, then check the margin on the new price with the Profit margin calculator. If you prefer to start from a target profit and work back to a price, use the Selling-price calculator for each size, then come back to this comparison to make sure the ladder still holds.

The tool compares price per kilo only; it does not judge your profit or what the market will bear. It shows you what a customer who works out the price per kilo will see, which is enough to avoid an obvious embarrassment.