[xAndrewx]

hmm

function onPlayerChats() {
  if (player.chat != "buy arrows") return;
  
  player.chat = this.onBuyArrows();
}
function onBuyArrows() {
  if (player.rupees < 30) return "You don't have enough money! You need 30 gralats";
  
  player.darts += 30;
  player.rupees -= 30;

  return "Yaaaay!! Thanks tuff guy";
}

quite funky