Could you explain what features are part of the Exhibitor | Add-On package and its annual cost?

Last verified against certain.com:

The Exhibitor add-on includes lead capture in the app, exhibitor VIP Portal access, and customizable lead capture custom fields.

  • Lead Capture / Lead Retrieval lets exhibitor attendees scan leads and collect attendee contact information. Lead Retrieval - Feature Setup
  • Event planners can enable it per exhibitor and assign a VIP Portal Admin.
  • Exhibitors can view and export leads, add team members, and customize lead form fields. Lead Retrieval - Feature Setup
  • Custom field types include Text, Rating, and Choice. Custom Fields

certain.com's documentation does not mention an annual cost for this package.