$150 in ads = 150,000 people who accepted invitation or 150,000 people who clicked to view the ad? if it's accepting an invitation, that's a STEAL. Although not

$150 in ads = 150,000 people who accepted invitation or 150,000 people who clicked to view the ad? if it's accepting an invitation, that's a STEAL. Although not 100% of ppl will actually go, it'll be a huge %. You're basically paying for a stronger intent than simply casual interest.