Amazon merchant data API enables the user to search for multiple products on Amazon marketplace by country.

The search is real time.

You can search by three different keys. Possible values are:
GTIN: The Global Trade Item Number (GTIN) is an identifier for trade items, developed by GS1. It contains subsets of EAN, UPC and JAN numbers.
ASIN / id: Amazon specific product ID
Term: Any string search term. Result structure is different when searching by term.

Available countries: us, de, es, fr, gb or uk, in, it, jp, mx, ae, au, br, ca, cn