Donald Trump is now facing a legal challenge over a paid feature on Truth Social that gives certain subscribers a head start on seeing his posts, sometimes for a price tag as high as $100,000 a month. Two media organizations, The Intercept and Freedom of the Press Foundation, filed the lawsuit on Wednesday in a federal court in New York, according to BBC News.

What does the paid service in question actually do? The service in question lets paying subscribers receive Trump’s Truth Social posts just seconds before they become visible to everyone else. That gap might sound small, but the plaintiffs argue it matters a great deal, especially since Trump has used the platform in the past to break major news, including developments tied to the Iran war, that had the power to move financial markets.

According to the lawsuit, this creates an uneven playing field. Those wealthy enough to pay for early access get market moving information before the general public, giving them a financial edge that ordinary users simply don’t have.