I realized that I hadn't posted any pictures of these yet. Amur's mate's tail is the black and silver (top) and was the first one made. Amur's tail (bottom) was the fourth.

The black and silver is an example of a simple tail design, with just two colors and basic striping on top and bottom (not shown), which goes for $275.

The black, green and blue is a more complex design, with three colors and a "fur" floof at the tip, which goes for $325.