Hi,
Yes you can charge to your guest, but if you do manually work then its possible.
if you will hire sales and support team member for your company then you will do. coz you need Online chat option and Manual Premium Plugin. then you will chat with all guests and take charges or 2nd option mention on your publish item interested guest will fill the contact form for premium ads and pay for premium ads and your team will activate premium ads within 1 hour. then you will earn more. its just manually and temporary work not permanent. yes if you will handle for long life then you will manage it otherwise not.
I hope my answer will help you.
Thanks