Compare prices. Understand the real cost. Pay less. All of it, for free.

Compare price per unit Compare the cost of refill-based devices Compare cost per use

Compare price per unit/measurement

Find the real price per metre, kilogram, litre or unit. (For example: toilet paper A has 8 rolls of 20 m each; package B has 8 rolls of 25 m each.)

(see some calculations with examples)

What do you want to compare?

Show price per

Compare with Product B

Product A

Total price

How many units are in the package? (if applicable, e.g. toilet paper)

units

Amount by weight/volume/length printed on the package (e.g. 800 g of rice, 500 ml of milk, 30 m of toilet paper)

Product B

Total price

How many units are in the package? (if applicable, e.g. toilet paper)

units

Amount by weight/volume/length printed on the package (e.g. 800 g of rice, 500 ml of milk, 30 m of toilet paper)

Result

Product B is cheaper. You save $ 0.01 per m — 12.5% less.

Product A: $ 0.08/m
Product B: $ 0.07/m

The result uses the prices and quantities you entered. Also consider quality, expiration date, waste, and the amount you will actually use.

Compare the cost of refill-based devices

See which option costs less and when the more expensive device starts paying off. (Capsule coffee machine, printer...)

(see an example of the calculation in practice)

Amount used

Frequency

How much do you use it?For example: 3 coffees per day or 50 printed pages per week.

Device A

Device price

Refill package price

How many refills are in the package?

refills

Each use costs $ 10.00

Device B

Device price

Refill package price

How many refills are in the package?

refills

Each use costs $ 3.00

Result

Device B becomes cheaper after 15 uses. At this rate, after about 15 days, Device B becomes cheaper. After that, you save $ 7.00 per use.

Cost per use — A: $ 10.00
B: $ 3.00

The result is an estimate based on the prices and usage frequency you entered. Changes in prices or consumption may change the break-even point.

Compare cost per use

Find out which item pays off more per use — and how that answer can change depending on how long you plan to use each one. (For example: a $150 basic pair of sneakers that lasts 6 months vs. a $500 premium pair that lasts 5 years.)

(understand the calculation with an example)

Amount used

Frequency

It doesn't matter which one you buy — how often you use it stays the same.

Product A

Price paid

After how long would you buy it again?

Product B

Price paid

After how long would you buy it again?

Result

Using it for 1.5 years, Product A is cheaper per use — 10.0% less.

Product A: $ 1.15/use Product B: $ 1.28/useBefore the next replacement, Product A still has the lowest cost per use. Around 1.5 years, when a new purchase of Product A becomes necessary, Product B becomes the most economical option.

The result is an estimate based on the price, usage frequency, and durability you entered. The product's actual lifespan may change the cost per use.

Cost per use over time

Product AProduct B

Why does the chart form a “sawtooth”? The chart represents a repeated cycle of buying and using. When a product has to be replaced, the accumulated spending rises all at once and the average cost per use jumps. As the new item keeps being used, that average cost falls again until the next replacement.

Before you buy, look beyond the price

Articles to help you decide with more confidence, beyond the calculators.

Hidden costs

Other interesting costs to consider

Energy, upkeep, accessories and the domino effect: what a purchase charges you after the price tag.

Read the article Bonus tip

Plan your purchases strategically

How much to save each month, where to keep the money and how to negotiate before paying.

Read the article