update sample data

README.md

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+---
+license: cc-by-sa-4.0
+task_categories: [tabular-classification, tabular-regression]
+tags: [ecommerce, amazon, dropshipping, fba, market-research, datenix]
+size_categories: [10K<n<100K]
+---
+# Datenix Amazon FBA Intelligence — 10K sample
+
+Top-10K Amazon products by monthly revenue, sourced from 770K FBA product database.
+
+Fields per row (18 columns):
+- `asin`, `title`, `brand`, `price`, `bsr`, `reviews`, `rating`
+- `monthly_sales`, `monthly_revenue`, `profit_estimate`, `grade` (A1..D3)
+- `categories`, `sold_by`, `fulfilled_by`, `is_prime`, `listing_quality_score`
+- `updated_at`
+
+## Full data
+- Full 770K products: contact hi@datenix.xyz
+- API access: https://datenix.xyz
+- Twitter: @datenix
+
+## License
+CC BY-SA 4.0 — attribute datenix.xyz when redistributing.