This is the lowest price for the newly released Duck Tales Series 1 (next best price online seems to be £7.56 at DVDi). It has 3 DVDs and a total running time of 460 minutes which should make for around 15(?) 30 minute episodes. Not a bad deal although annoyingly this doesn't seem to be the same as the US version of Series 1 which has 27 episodes. Of course if it did it would probably cost more as well but still...:-)
Also buy through Quidco for an 5% off.
PS.It is temporarily out of stock but you can still order it.
PPS. You can also get series 1 of Chip 'N Dales for the same price (3 DVDs again).