Howdy Gordon,
That sounds like an awesome business plan. You are not the first person we have encountered who wants to do that with our plugin. We have had a few suggestions about this. Please vote up the ones that are relevant to you, every vote does count when we are decideding where to allocate development time.
Currently the plugin is just not capable of what you want. You can not (yet?) charge people to submit events, nor can they sell tickets without linking to a third party service link Eventbrite. It would require some extensive modifications to add all the functionality you want. Sadly, I am not aware of any other solution for you, especially WP plugin wise.
Please let me know if you have any more questions, or if I can clarify any aspect of my answer. Thanks!
– Brook