Anyone have experience selling??

I got a free clean out bag last time I bought a bunch of stuffs so I figure i should probably use it.

Correct me if I'm wrong but if the clothes don't sell they just kind of like...sit in the warehouse forever?

Does anyone have any tips/tricks on what to sell so that..it actually gets bought.

Idk is a good strategy sending in cheap/no name but eye- catching statement pieces? Or sending in stuff with recognizable brand name?

I just don't want to be annoyed cause I and something in that never gets scooped up that I could have just sold otherwise