The Hut are selling "Shrek Ogres and Dronkeys" for the Nintendo DS for £12.93 (inc Del.)
You can get cashback from the usual sites (e.g. 5% from Quidco, making it just £12.28)
The next best price seems to be £15.95 from BlahDVD.
Train your Ogre and Dronkey for the adventure of their lives!
Raise and Train your Ogre and Dronkey!
Care for and play with them!
Use newly learned skills on exciting adventures!