The default features of the theme are outlined on the
main Vantage theme page, and shown on the demo site also linked from there. To specifically address the points you mention:
Ratings are included in the theme by default, no plugin required.
Events can be charged for, yes.
Currently listings are paid for individually rather than a membership option.
The theme does not include an option to offer discounts for placing a listing, however you can add this functionality through the use of a
plugin available in our marketplace.
There is just the layout option shown on the demo (main map is an optional widget built into the theme), but the theme can be customized by you to suit, or you can find
ready made Vantage child themes in the AppThemes marketplace also. Thanks.