Where can I find marketplace for leads?

Hi! I just want to ask if meron kayo idea where I can sell my lead database? Sayang kasi kung nakatengga lang siya, might as well make use of it to earn additional buck. I got the leads on my own effort.

Applicable siya for B2B, SaaS and Realtors. Please keep it in the comments as I don't want to risk getting banned.
Won't be selling to anyone here as well. I am looking for the right channel.