Don't forget Quidco, TCB.
Pack contains 4 bluray discs
Free store pickup from partcipating stores.
Other store prices:
sendit.com £16.98 (with delivery charge)
thehut £17.45 (with delivery charge)
bbc shop £17.99
Planet Earth is also available, but not the best price [£14.75]
"All the episodes from the very successful programmes; Earth power of the Planet and How Earth Made us. Both presented by Prof. Iain Stuart. Both series take a different view on the traditional natural science programmes by looking at the effect the planet has had on us, not the effect we are having on the planet. "
£9.99 @ Sainsburys