XS Code

public class xSellBooster extends Booster {

    int totalSells;
    private HashMap<Player, Integer> sellsLeft = new HashMap<Player, Integer>();
    private List<String> players = new ArrayList<String>();

    public xSellBooster(Player p, double multiplier, boolean silent, int totalSells) {
        super(multiplier, silent, true);
        this.totalSells = totalSells + this.sellsLeft.get(p);
        this.players.add(p.getName());
        this.sellsLeft.put(p, this.totalSells);
    }

    @Override
    public String getOwner() {
        return "Your";
    }

    @Override
    public long formatTime() {
      return -1;
    }

    @Override
    public List<String> getAppliedPlayers() {
        return players;
    }

    static SellEvent se = new SellEvent() {
        @Override
        public void onSell(Player p, Type type, int itemsSold, double money) {
            sellsLeft.put(p, totalSells--);

            if (sellsLeft.get(p) == 0 && sellsLeft.get(p) != null) {
                players.remove(p);
                sellsLeft.remove(p);
            }
        }
    };

    static {
        QuickSell.registerSellEvent(se);
    }
}