https://www.gamespot.com/articles/fortnite-v-bucks-and-cosmetics-available-in-nice-n/1100-6457720/

Part of Fortnite: Battle Royale's success stems from the fact that it's free-to-play; anyone on PC, PS4, or Xbox One--and now, some on mobile--can dive right in and start playing. But there are a number of ways to spend money on the experience if you so choose, and now there's a new option in the form of a Starter pack that provides good value.

You can now purchase the Starter pack on all platforms, including mobile (which remains an invite-only test on iOS). Meanwhile, a new weapon is on the way to the game "soon" called the Guided Missile, though we don't know when it's set for release.