The DVD boxset of Seasons 3 and 4 of 'Lost' are £20 each instore at ASDA.
Season 3 (7 Discs) :-
Jack, Kate and Sawyer open the season in captivity, as prisoners of "The Others." Just who these "Others" are and what they want are primary questions Season Three will explore. Michael Emerson joins the cast as a regular in his ongoing role as "Henry Gale". Romance looms on the horizon as Jack's interests veer towards a mysterious new woman, whose motives may be questionable. Sun and Jin will continue to celebrate their pregnancy - but is the child really Jin's? Will the survivors heed Hurley's warning or will they journey across the island in an attempt to free Jack, Kate and Sawyer? Charlie will attempt to return into the good graces of Claire and her baby, Aaron, but can he be trusted to stay clean and sober? The fates of Locke, Desmond and Mr. Eko in the aftermath of the implosion of the hatch are answered. Will Penelope Widmore find the island and her long, lost love, Desmond, and can the survivors find a way to interact with the outside world?
Season 4 (6 Discs)
From J.J. Abrams, the producer of Cloverfield, comes the long awaited Series 4 of Lost!
Join Jack, Sawyer, Kate and the rest of the remaining survivors in an action packed fourth series!
Rescue is imminent.... but how or by whom remains a mystery.
PLEASE DON'T POST ANY SPOILERS.