Adampower flex pro 888, a badminton racket six years ago, where can I sell it now?

I took a look at adipower and thought it was fake. Then I took a look at Flex. Forget it. It has been discontinued. It is estimated that Flex has not finished in recent years. There is a broken 12 constellation series at the low end. By the way, there is also a hollow rod sold by Ping Pong Pioneer Channel, which leads to the bottom cover. I forget what model Flex is.