How we compare products
This page says how BuildBatch compares products and what each label means, so that every comparison page can be held to it. It was written on 29 September 2026.
Four kinds of page
| Kind of page | What it means | What the page must show |
|---|---|---|
| Worked out | Figures from the maker's own published pages, put through BuildBatch's calculators. It is not a test. | Which figures were used, where they were read, and on what date. |
| Tested | Someone bought the products and measured them. | Who did it, what was tested, how and when, with the results. Today no page is tested. |
| Ad | A link that may earn BuildBatch money. | The word “Ad” beside the link, before you tap it. Today there is no such link. |
| Worked example | BuildBatch's own arithmetic on round, made-up figures, to show how a calculation works. It uses no maker's figure and no real price. | That the figures are made up, said beside each one. |
Each word is used only in this sense. On a comparison page or a worked example, “worked out”, “worked example”, “tested” and “Ad” mean what the table says and nothing else. Anywhere else on the site they are ordinary English: “everything is worked out in your browser” is not a label.
What a comparison never does
- Never ranks by commission. Money BuildBatch could earn never decides which products appear or in what order. If a page has an order, it says how the order was set.
- Never calls a product best, cheapest or recommended unless a test supports the word, and then the page says how. Today no page is tested, so no comparison can use those words.
- Never shows a maker's or a shop's price at this stage. A product shown with a price is an invitation to purchase, and BuildBatch is not a shop. A worked example may use round, made-up prices to show the arithmetic, and it says so beside each one.
- Never copies a maker's text or pictures. The one exception is a short quoted claim, marked as the maker's own, with its source.
- Never changes a page's date unless the page's content changed.
- Never hides a gift. If a maker or a seller gave BuildBatch a product, the page says so.
How a page is made
- Drafted with AI tools. A second AI tool checks the figures against the makers' published pages. No person has checked a page yet. Angelos Hallaci, who runs BuildBatch, is responsible for what is published.
- The same calculators as everywhere else on the site. A worked-out page puts the makers' figures through the calculators you can use yourself.
- Sources and dates on the page. Each comparison page shows its sources and the date each one was read.
- Mistakes are corrected in the open. An error is corrected on the page, with the date of the correction. To send one, use report a problem.
This page is itself a draft for the owner's review.
How BuildBatch is paid
Today nothing on BuildBatch earns money: how BuildBatch is paid says what may be added later, and how estimates work says how the calculators reach their numbers.