[Kristi]

Originally Posted by [email protected]

Don't use that
Use this

function onPlayerChats() {
  if (player.chat != "buy headbob") return false;
  if (player.rupees < 100) return false;
  if (player.findWeapon("headbob") != false) return false;
  player.addWeapon("headbob");
  player.rupees -= 100;
}

Your code assumes his shopkeeper will only be selling that one item (which will most likely be false)