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post/iherb/v1/category2 credits
Browse one catalogue category on one country's storefront.
Working example
Parameters
Category slug from the URL, e.g. vitamin-c. List them with `categories`.
Which national storefront to price against.
1-based page. (1–100)
Max 48. (1–48)
Result order; see the note on `search.sort` — sorting shrinks the set.
iHerb's star BAND, 1-5. This is a band, NOT a minimum: measured on one storefront, band 5 returns products rated about 4.8 and up, band 4 about 3.8-4.7, band 3 about 2.8-3.7. Asking for 3 therefore EXCLUDES 4- and 5-star products. The `filters` action prints how many products sit in each band. (1–5)
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