Is it on the black Market ???

[Reemy]

Hi,
Would you please tell me which one is the correct usage of the preposition , to say "sell things on the black market ."
or "sell things in the black market" ????
I am rather confused noticing that Oxford dictionary prefers (on), While i find most used in the black market.
Thanks

[MrPedantic]

Hello Reemy

I've only ever heard "on the black market".

All the best,

MrP

[Reemy]

Thanks a lot MrPedantic