Is there a place to buy ad data?

I'm sitting on FB not wanting to throw more money away on building the buying audience for my niche and I am wondering if there is a marketplace that has niche audiences for sale or is something similar out there I can grab instead?

Tips would be helpful too!

Great question..

Check out

https://www.blackhatworld.com/seo/f...-wasting-money-on-the-wrong-audience.1151538/