Cheapest I can see at the moment.
The Hut £17.85
Discover the glorious variety of life on Earth and the spectacular and extraordinary tactics animals and plants have developed to stay alive. Packed with excitement, revelation and entertainment – and stunning screen firsts' – this breathtaking ten-part blockbuster brings you 130 incredible stories from the frontiers of the natural world. This is evolution in action; individual creatures under extreme pressure to overcome challenges from adversaries and their environment, pushing the boundaries of behaviour. Cutting edge cinematic techniques capture unprecedented, astonishingly beautiful sequences – birds running and dancing on the water's surface in dazzlingly intricate displays of courtship and fidelity, fish outwitting predators by using their fins to take flight, flies competing in a mesmerising eyeball inflation contests More than four years in the making, filmed over 3000 days, across every continent and in every habitat, this is Life – as you've never seen it before.