There seem to be two versions of the Bandai Smartpet Robot Dog on Amazon, one in black for $157 (that's out of stock at the moment) and one in white for $60. I

There seem to be two versions of the Bandai Smartpet Robot Dog on Amazon, one in black for $157 (that's out of stock at the moment) and one in white for $60. I don't know why there's such a high price difference, especially since there doesn't seem to be any functional difference between the two.