This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: A sign in the lobby of Amazon offices is shown on Feb. 14, 2019 in New York. Credit: AP Photo/Mark Lennihan, File Amazon has launched a low-cost online storefront featuring electronics, apparel and other products priced at under $20, an effort to compete with discount retailers that have increasingly encroached on the e-commerce ...