text: You can create an Amazon Store for free.
  Sponsored Products, Sponsored Brands, and Sponsored Display campaigns are
  cost-per-click (CPC) ads, meaning you pay only when customers click your ad. You also control the total budget for each campaign
  The cost of display ad and
  video ad campaigns can vary depending on format and placement.
  Advertising through a managed-service option with an Amazon Ads account executive (display ads, video ads, and ads that are run through the
  Amazon DSP) typically requires a minimum spend of $50,000 (USD).
  Contact an Amazon Ads account executive for more information.
  Audio ads require a typical minimum budget of $50,000 (US) and are sold on a
  CPM (cost-per-thousand impressions) basis.
  Custom programs are subject to a required minimum spend.