How could someone pay even $2 for a meetup they've never attended? How would they know that someone would even show up? Especially if the organizer is now only paying $2/month to keep it going.
And once someone has attended a meetup, they're exchanged contact info with the organizer and so there's reason they'd have to pay meetup to attend the event.
It doesn't work that way in practice. People use Meetup because it handles everything from reservations to ticketing to email announcements to messages boards and things in between. A mailing list is not a replacement.
I believe each group has unique power due to its efforts in building a group, growing, and nurturing members.
With this pricing, Meetup is closing the door to free network effect and not letting the host benefit from own efforts. You should check https://info.explara.com/switch-from-meetup-to-explara