Sheesh! I didn't realize that when I ordered! I ordered the wrong one! 
Now I can't seem to find the right page for the finer detailed shell.
Tony,
It's the same page. In the upper right hand corner, underneath where is says "Beta" there are two buttons to push. Push the left one and you get "Plastic: Frosted Ultra Detail" i.e. FUD, the other is for "Plastic: Frosted Extreme Detail" i.e. FXD. The type you order depends on which is pushed at the time you put it in the cart. You can see the price change as you click back and forth between them.
I'm sorry you got the wrong one. Perhaps there is still time to write or call Shapeways and get the order changed or cancelled.
