InstantPresenter also offers Pay-Per-Use billing at the low rate of $0.10 per minute per person. This can be set up for only $2 per month, or it can be used when you need to allow a few more people in your online meeting. You simply enable the "Allow Overage" feature, and your room will be able to accomodate up to 500 attendees, and you only have to pay the low per-minute rate.