I spotted this in the new Tesco Direct catalogue. Call 0845 6004411 and ask for product number 200-9548 to order. This is only a bargain if you 'collect in store'to avoid delivery charges (or order this at the same time as something else perhaps).
..and don't forget to collect your clubcard points.
I can't seem to find it on the Tesco website, so it looks like it's phone only.