Unicycles on Overstock.com

Overstock has a bunch of different 20" models on their website (white russian, devil blueberry, devil green, etc.). The prices differ considerably, but they all seem to have the same features. Are these all the same unicycle with different color schemes, or are they really different models? Also, how do they compare to the standard Nimbus 20" trials uni?

Check out this thread: Koxx Unicycles