Usually, table tennis players need two rubbers on their rackets. The costs are deadly high. If you want to perform as a professional, you have to pay ¥10,000 to ¥16,000 for a racket. That means a sheet of rubber costs ¥5,000 to ¥8,000. My son would replace the rubber at least once a month or sometimes twice.
It would be killing me. Sigh.