Electronic Field Trips

Has anyone tried an electronic field trip such as those offered by Colonial Williamsburg? Here's the link: http://www.history.org/trips/

Pricing -- which is on a per school basis -- seems pretty reasonable ($120 per trip or $500 for all seven). Supporting materials include a teacher's guide and web resources containing background material, lesson plans, and primary sources. In addition, there is a chance to participate in an interactive lesson – either during the live broadcast or via email with volunteer historians -- all student questions are answered.

The grade level for which these Electronic Field Trips are designed is 4-12 (though most are 4-8) and it might be a nice enhancement for at least some of our classes.