Amazon.com Inc. said it has agreed to obtain podcast producer Wondery, the online retail giant’s most recent move to boost its audio provisions.Amazon didn’t disclose the purchase price, but a person familiar with the matter said it was concerning $300 million. The Wall Street Journal earlier this month reported Amazon was in exclusive talks to acquire Wondery.Founded in 2016, Wondery is one of a few audio startups that succeeded in recent years as podcasting caught on with advertisers and listeners. Wondery is known for its gritty, narrative-fueled podcasts that add cinematic sound design to nonfiction stories.Amazon said acquiring Wondery-the creator of true-crime shows like “Dr. Death, “Dirty John” -would allow the company to deepen its podcast offerings.