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Luiz Otávio Barros: Amazon KDP author data
As of Nov 6, 2026, Luiz Otávio Barros has 8 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #2), mostly in TOEFL & TOEIC, College Guides, Higher & Continuing Education.
| Median price | $10.99 |
|---|---|
| Price range (middle 50%) | $6.99 – $12.74 |
| Median reviews | 146 |
| Total reviews | 4,023 |
| New listings (30 days, incl. new editions) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $10.99, 28% below the median of their main category, TOEFL & TOEIC.
Luiz Otávio Barros's best-ranked books
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The Academic Writing Lifesaver — Compact Edition : 100 Grammar, Vocabulary, and Punctuation Mistakes — Fixed for Good (Academic English Unlocked)
by Luiz Otávio Barros
- Price$2.99
- Rating5.0
- Reviews1
- Published2026-09
-
The Only Academic Phrasebook You'll Ever Need: 600 Examples of Academic Language (Academic English Unlocked)
by Luiz Otávio Barros
- Price$6.99
- Rating4.6
- Reviews1,717
- Published2016-09
-
100 Phrasal Verbs to Learn for Life : Vocabulary Expansion for High-Intermediate and Advanced Students
by Luiz Otávio Barros
- Price$6.99
- Rating4.5
- Reviews213
-
The Only Academic Phrasebook You'll Ever Need: 600 Examples of Academic Language (Academic English Unlocked)
by Luiz Otávio Barros
- Price$11.99
- Rating4.6
- Reviews1,717
-
The Academic Writing Lifesaver: 100 grammar, vocabulary, and punctuation mistakes—fixed for good (Academic English Unlocked)
by Luiz Otávio Barros
- Price$9.99
- Rating4.8
- Reviews42
-
The Academic Writing Lifesaver: 100 grammar, vocabulary, and punctuation mistakes—fixed for good (Academic English Unlocked)
by Luiz Otávio Barros
- Price$17.99
- Rating4.8
- Reviews42
-
English in the News: Real-life Vocabulary in Use and Collocations for B2/C1 Students
by Luiz Otávio Barros
- Price$11.99
- Rating4.3
- Reviews78
-
100 Phrasal Verbs to Learn for Life: Vocabulary Expansion for High-Intermediate and Advanced Students
by Luiz Otávio Barros
- Price$14.99
- Rating4.5
- Reviews213
Main categories
FAQ
How many books does Luiz Otávio Barros have on Amazon?
KDPTop tracks 8 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Luiz Otávio Barros publish in?
Their books chart most often in TOEFL & TOEIC, College Guides, Higher & Continuing Education.
How does Luiz Otávio Barros price their books?
The median price is $10.99; half of the books cost $6.99–$12.74.
Has Luiz Otávio Barros released new books recently?
1 new book in the last 30 days, 1 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.