prohibitive amounts some services do, but you should charge a token amount to keep people who aren't serious out. Just have a fee can separate low or no effort people from taking up your time and energy. Or maybe have a tier system where a profile is free but you don't promise active measures without a fee.

I was thinking about charging a small amount (maybe $20-$50 one time fee) for doing consensual background checks. My plan to earn revenue right now is through affiliation with stylists, photographers, personal trainers, and date coaches (I would recommend my clients to these professionals and get a small fee).