As above, 50 x KODAK CD-R for £3.73 and 50 x KODAK DVD-R £4.48. This may be store specific and if it is, this was TESCO LAKESIDE RETAIL PARK.
Of note, I was buying a PS3 Game at the Electrical counter and they had loads of tall trolleys full of electrical gear. There were tonnes of IPOD docking bays from reduced from £40 to £15, loads of DAB radios with those magic yellow barcodes on and trolleys full of unboxed LCD tvs. They said they were all gonna be priced up to go. I could see the staff already sniffing around like Hyenas!