This is the cheapest anywhere and the prices seem to be going up - except Toys r us which is on at £59.99 but they don't seem to have any stock.
Zoomer Dino that can chase, chomp, guard and even roar. Kids can make Boomer perform tricks using the motion of their hands or control his movements using the included control pod. Boomer balances on 2 wheels using True Balance Technology, and if he accidently falls on his neck or tail, he’ll get up by himself without your help. Thanks to a special optical sensor, Boomer can detect objects in his path and safely navigate his way around them. Boomer also has mood indicating eyes that turn blue when he senses your hand, turn purple while he’s being trained and go red when he’s angry.