What to do with Warface $?

The popup said you can use warface dollars to buy stuff, but NOTHING in the store uses $ only the crown and K currency. Am I missing something? Can I convert warface $$$ in to crowns or Ks?

@Vuud: $ meant for buying weapons from vendors in shops after you unlock each weapon inside the game.

K currency is actually meant for buying it with real money.

For more info - click on help menu & they mentioned all details in-game.

Hope this help. 8)