Two things are different in nature. Although paper and silver can be shorted now, this is a firm transaction with no leverage. As for the handling fee, you know it, but the handling fee is not cheap for banks. However, futures also has its shortcomings. First of all, the futures silver trading unit is 15 kg per lot, which keeps some people with mini-funds out of the door. In addition, the trading period is discontinuous, which will cause system risk. For example, a big overnight gap.