productstringrequired
Amazon product ASIN (e.g. B006MIWDCC) or a product link on one of the marketplaces listed under region, such as https://www.amazon.co.uk/dp/<ASIN>, with the ASIN after /dp/, /gp/product/ or /product-reviews/. A link without an ASIN, such as a search results page (/s?k=...), or a link to another site or marketplace is refused as invalid input, with no charge.
