Embodiments for implementing a buyer global search in electronic commerce include a method of detecting, by a computing device, that a search query for a product item within a first marketplace is unsuccessful and in response to the unsuccessful search query, executing the search query for the product item within a second marketplace. The method further includes detecting that the search query for the product item within the second marketplace is successful; and in response to the successful search query in the second marketplace, offering a user that submitted the search query in the first marketplace to purchase the product item being sold by a seller.