i have just been in to my local store and clearance items are available for cd-r and dvd-r.
samsung cd-r 10 pack jewel case 99p
TDK 5 pack jewel case dvd-r 99p
and more instore, check your local outlet!
also, i spent over £10 and i got a second reciept which states if i take part in a survey at superdrugfeedback.com write the code on my reciept its 10% off when you spend £10 in store!