Merlin is available on DVD. The Complete Series 1, Series 2, Series 3 and Series 4 boxes were released on DVD in the United Kingdom.
There are also many international versions - for example German, French, Australian.
Merlin is also available on iTunes either in standard quality or in HD quality (720p). (High definition quality is only available for Series 4.)
Series 1[]
Merlin Series One Vol. 1[]
Number of discs: 3
DVD release date: November 24, 2008 (UK)
Run time: 270 minutes
Contains episodes: 1 - 6
Merlin Series One Vol. 2[]
Number of discs: 3
DVD release date: February 9, 2009 (UK)
Run time: 315 minutes
Contains episodes: 7 - 13
Merlin The Complete Series One (box set)[]
Number of discs: 6
DVD release date: February 9, 2009 (UK)
Run time: 565 minutes
Contains episodes: 1 - 13 + Behind the Scenes, Cast Video Diaries, Audio Commentaires, Wallpapers, Photo Galleries
Series 2[]
Merlin Series Two Vol. 1[]
Number of discs: 3
DVD release date: November 23, 2009 (UK)
Run time: 260 minutes
Contains episodes: 1 - 6
Merlin Series Two Vol. 2[]
Number of discs: 3
DVD release date: February 8, 2010 (UK)
Run time: 307 minutes
Contains episodes: 7 - 13
Merlin The Complete Series Two (box set)[]
Number of discs: 6
DVD release date: February 8, 2010 (the UK)
Run time: 585 minutes
Contains episodes: 1 - 13 + Behind the Scenes, Cast Video Diaries, Audio Commentaires, Wallpapers, Photo Galleries
Series 3[]
Merlin Series Three Vol. 1[]
Number of discs: 3
DVD release date: November 15, 2010 (UK)
Run time: TBA
Contains episodes: 1 - 6
Merlin Series Three Vol. 2[]
Number of discs: 3
DVD release date: January 24, 2011 (UK)
Run time: TBA
Contains episodes: 7 - 13
Merlin The Complete Series Three (box set)[]
Number of discs: 5
DVD release date: January 24, 2011 (UK)
Run time:
Contains episodes: 1 - 13 + Behind the Scenes, Cast Video Diaries, Audio Commentaires, Wallpapers, Photo Galleries
Series 4[]
Merlin Series Four Vol. 1[]
Number of discs: 3
DVD release date: November 28, 2011 (UK)
Run time: 270 minutes
Contains episodes: 1 - 6
Merlin Series Four Vol. 2[]
Number of discs: 3
DVD release date: January 23, 2012 (UK)
Run time: 301 minutes
Contains episodes: 7-13
Merlin The Complete Series Four (box set)[]
Number of discs: 5
DVD release date: January 23, 2012 (UK)
Run time: 509 minutes
Contains episodes: 1-13
Merlin The Complete Series Four (Blu-ray)[]
Number of discs: 5
DVD release date: January 23, 2012 (UK)
Run time: 559 minutes
Contains episodes: 1-13 and behind-the-scene features