@PokeLys Well, just because you want a debate, I'll give it a shot. XD
The $200 headphones would (and i'm just assuming this) have much better sound quality, and you would have more satisfaction in using them than the $20 headphones.
The expensive headphones would also most likely come with a lifetime or a longer warranty than the $20 headphones, so if you break them they may be able to be repaired without extra cost.
Lastly the expensive headphones may come with extra features that may matter to you, such as: Bluetooth connectivity, more comfort, different aesthetic and colour choices, battery life, etc.
And that's about all I could think of... You probably already made a decision considering when this was posted lol, but goodluck!