Pi currently has no institution to guarantee it. If you rashly use it for shopping, it will often result in the phenomenon that the currency is not received after delivery, and the currency is not sent after delivery, which will cause disputes. Although it is sold at a marked price, it can only support self-collection and cannot be mailed, so it does not meet the conditions for online shopping. Pi does not currently meet these conditions, so I think it is still unrealistic to use Pi to pay for online shopping at this stage. If the ultimate goal of Pi is easy business trade and the implementation of applications, there is still a long way to go to achieve this goal!