We had already bought a remote control robot when our 5 year-old wrote a new Christmas list with this on it. I panicked and bought it at the last minute, as the robot was from us, not from Father Christmas, and I didn't want him to think Father Christmas didn't like him! I can see why they would like it - it's a bit like lego figures only bigger, and the bits you pull off Mr Power Ranger become other gadgets and creatures. Anyway, we got something else of his Santa list and he soon forgot about wanting this when he saw the robot - but have kept it for his birthday in a few weeks!
Have to say it is a good price (£20) for a toy that a child really wants for Christmas - so many of them are £50 or £60.