Sorry if this has been mentioned.
Sainsburys have the following box sets at what I thought were good prices in store: -
Futurama Season Box Sets - £12
Simpsons Season Box Sets - £12
Family Guy Season Box Sets - £10
American Dad Season Box Sets - £10
Other deals: -
X-Men trilogy Box Set - £8
24 Season Box Sets - £15 (if I remember correctly)
Various CDs around £2 or £3.
I picked up Damien Rice - 9 for £3, and The Very Best of Crowded House for £3. They also had Sandi Thom - Smile It Confuses People for £2 and some others, which I can't remember (sorry).