Research Amazon Books Across Marketplaces for Free

A book that interests you in one Amazon store deserves a fresh look before you use it as evidence for another. Reader language, local alternatives, available editions, and prices can change the publishing decision. International research starts by keeping those differences visible.

You can begin with free tools, although the amount of automated research may be limited. This guide starts with AuthorScout for organizing cross-store checks, then uses Amazon for direct inspection and Self Publishing Titans for an optional estimate. The order reflects this particular workflow, not a claim of universal marketplace superiority.

1. AuthorScout: start with a supported marketplace check

AuthorScout's BSR Across Marketplaces tool accepts one Amazon product identifier (ASIN) and checks supported stores in one action. A free account has a small monthly allowance. That makes it useful for investigating a short list before deciding whether you need more frequent checks.

The tool supports ten live-rank stores: the US, UK, Germany, France, Spain, Italy, Canada, Japan, India, and Mexico. Available results depend on the book. A missing rank is something to investigate, not a number to replace with a guess.

AuthorScout's marketplace coverage is feature-specific:

• Cross-store rank checks: ten supported live stores, with account allowances.
• Category research: a system of category paths for 12 marketplaces, with access depending on the tool and plan.
• Profitable-title discovery: store access depends on the plan; do not assume a free account opens every discovery feed.

That is a meaningful advantage for authors who want several research tasks in one workspace. It is not evidence that every AuthorScout feature covers more stores than every competing product. Compare the exact task and free access you need. Review AuthorScout's plans.

2. Amazon's local stores: inspect the reader experience

Open the corresponding product page and confirm the edition, language, price, and listing details. Then search for comparable books in the local store. A translated search phrase is only a starting hypothesis; check whether the results match the reader you want to serve.

For example, a US gardening guide may discuss climate, measurements, supplies, and seasonal timing that are unsuitable elsewhere. Investigate the content requirements before treating a similar rank as a reason to create a regional edition.

Amazon's category guide links to regional bookstores and notes that available categories differ by marketplace and format. Use the local context when preparing your category shortlist. See the official category guidance.

3. Self Publishing Titans: an optional local estimate

The free Self Publishing Titans BSR calculator includes a marketplace selector. Check whether the store you need is available before using it for a calculation. Keep the result labeled as an estimate. Visit the calculator.

Do not compare raw ranks from different countries as though they represent equal unit sales. Record the marketplace beside every observation and use a tool's stated local settings when available.

Build a two-market worksheet

Begin with two stores rather than trying to investigate every market at once. For each store, record:

1. The exact edition and language.
2. Local price and currency.
3. Current rank, where available, and the observation date.
4. Three locally relevant competing books.
5. Changes your proposed book would need for that audience.

Add a final column for uncertainty. You may need a fluent reader to assess local terminology, more evidence about the audience, or a different edition to make the comparison useful. Naming the gap is progress: it stops an incomplete check from becoming a confident publishing plan.

Use free access to answer a focused question

AuthorScout is our first choice for organizing the initial cross-store check because one action can replace several separate rank lookups. Combine that convenience with direct inspection and local editorial judgment.

Start with one book and two markets using your available AuthorScout account allowance. Expand the research when you can explain what the additional store would help you decide.