Dragon Ball Z Kai: Seasons 1-4 on Blu-ray, Each £22.99 / £18.69 on DVD

Blu-ray price of each Dragon Ball Z Kai season - £22.99 (RRP £39.99), and on DVD - £18.69 (RRP £34.99).

Season 1 (Saiyan arc) [Eps. 1-26]

Goku, Earth's greatest champion, bravely defends humanity against an invading race of warriors known as the Saiyans. When the mighty hero falls, his young son Gohan rises up to face the very villains who murdered his father. The battle rages through space to Planet Namek, where Gohan and his overmatched allies risk their lives to defeat the Saiyan warlord Vegeta – and the monster known as Freeza!

Season 2 (Freeza arc) [Eps. 27-52]

Krillin and Gohan test out their new and improved powers in a throw down with Vegeta, Frieza struggles to unlock the magic of the Dragon Balls, and Goku races through space on a collision course with the Ginyu Force! This installment of Kai has it all: seven Dragon Balls, four epic heroes, and three horrifying villains bent on world domination!

Season 3 (Artificial Humans arc) [Eps. 53-77]

The epic showdown between Goku and Frieza reaches its climax as planet Namek crumbles beneath their feet! In the aftermath of battle, neither fighter is anywhere to be found, but Earth's few remaining heroes have much bigger problems. A mysterious and powerful stranger known only as Trunks arrives from the future with a warning: the Androids are coming, they take no prisoners, and even Goku - wherever he may be - is no match for their kind!

Season 4 (Cell arc) [Eps. 78-98]

The grand battle of everyone against Cell concludes on this fourth and final season!