Guides
The background a calculator alone cannot give you.
- Selling & pricingWhat the break-even point really tells youThe break-even point is fixed costs divided by contribution margin. Here is how to split your costs correctly and how to bring the number down.Updated August 25, 2026
- Selling & pricingMargin, cost ratio and markup explainedMargin is measured against revenue, markup against cost. Here is why the same deal produces different numbers and how to price without confusing them.Updated August 25, 2026
- Shopping & unit priceWhy the big pack is not always cheaperBulk packs have a lower unit price, but only if you finish them. Here is how to adjust for waste and find the usage rate where bulk starts to pay.Updated August 25, 2026
- Shopping & unit priceThe easiest way to compare unit pricesPack sizes differ, so shelf prices cannot be compared directly. Here is how to convert any price to a price per 100 g, 100 ml or item.Updated August 25, 2026