Virgin's "North Polar Expedition" title, in contrast to Ecodisc, provided the software to support interaction on separate floppy disks instead of as LV-ROM content. It was priced at £199 plus VAT, and was reportedly a "testbed for CDI applications" planned by Virgin Publishing. Having received one unfavourable verdict that the title offered "a tired question and answer format in what should be an innovative new medium", a response to this particular review attempted to address such criticisms by noting the limitations of the interaction method employed by the Domesday system, the tightly coupled sound and video capabilities of the medium, and the need to deliver and improve the software without involving the "expensive and complex LV-ROM mastering process". The response also questioned the future of the LV-ROM format, in contrast to Laservision and CD-ROM, also indicating that CD-I would remove various restrictions experienced with the laserdisc medium.