Lowest price we've seen yet... Amazon has the BBC Earth Planet Earth II and Blue Planet II: The Complete Collection (6-Disc 4K Ultra HD Blu-ray Set) for $27 with free shipping. Narrated by the inimitable David Attenborough. Planet Earth II premiered in February 2017 on BBC America.
Deep Discount has BBC A Perfect Planet (4K UHD Blu-ray + Blu-ray) for $13.25 - 10% off w/ code PLUNGE + $1.99 shipping = $13.92 shipped
$27 retail: $70Report