Yeah, they are nice Dragons. I bought one at Toys 'R' Us (Water Clan), got home and discovered that the receipt had a $10 coupon if I called their 800 number and finished a survey.
Called it, got the discount number, went and got the Fire dragon. Went home and discovered the receipt had another $10 coupon if I answered the same survey... got the Emperor Dragon, since that was the last one they had (I wanted either Sorcery or Komodo), got home and discovered... that there was no coupon this time. Oh well, 2 out of 3 ain't bad.
Considering that I got $10 off on $11 dragons twice it was a pretty good deal. I have statted out the Water Dragon as a Gargantuan Blue (Aquatic) Dragon. No flight, excellent swimming, and two ways to use its breath weapon - above water the normal lightning bolt of a blue dragon, under water a sphere that deals the same damage to everybody within 30 feet of the dragon's base.
The Auld Grump, though with a 23 CR I don't think that I'll get to use it any time soon... (My players are currently 8th level.)