CD-R, 50 of them made by Verbatim. Great if you have a Sainsburys nearby. Not as good as the 100 pack 4 months ago (£10) but it will do.
Why? some people have transportation that have Compact Disc Reading capabilities stragely without DVD+R support (crazy I know). It actually works out cheaper to buy these than to buy a new car. If you no longer use CD-Rs or you have a CAR that supports DVDs then yes you will not want to buy these.
Some people even have CD player setups at home etc who knows!