I think the site is a bit flaky at the moment as I dont seem to be able to basket the offer to get the delivered price, but you may have more luck than me.
Stay in touch for less with friends and family this Christmas with a Tesco Internet Phone. If you haven't used internet phones before this is a great opportunity to try it out and see the benefits for yourself. Get one for yourself and give one to friends or family in the UK or abroad to chat for free*. Not compatible with Microsoft Vista.