Articles
Price per kilogram: stop paying for the packaging
Updated: 6 October 2026
A 200 g pack for 12,000 sum or a kilo for 48,000? One simple formula tells you which is the better buy.
The formula
Price per kg = pack price ÷ weight in grams × 1000. For liquids, do the same with millilitres and litres.
An example
| Pack | Price | Price per kg |
|---|---|---|
| 200 g | 12,000 sum | 60,000 sum/kg |
| 500 g | 26,500 sum | 53,000 sum/kg |
| 1 kg | 48,000 sum | 48,000 sum/kg |
The figures are illustrative, but the pattern is typical: the small pack almost always costs more per kilo.
When the big pack is not the better buy
- when the small pack is on offer and the big one is not;
- when the food will spoil before you finish it;
- when the “big” pack is smaller than it looks: 900 g instead of 1 kg.
Loose and per-piece goods
Fruit, loose sweets and sliced cheese are sometimes priced per 100 g and sometimes per pack — convert them to one unit. Eggs and toilet paper are easier to compare per piece or per roll.
ArzonTop does the maths for you: it shows the price per kg or litre under each price, can sort results by price per kg/l, and points out when a similar product is cheaper per litre in another store.
Remember the promotions
A discount changes everything: for a week the small pack may be cheaper than the big one. So compare today’s prices, not the ones you remember from last time.
