I think I remember a large vertical cel of all five of them
around a blue car, but my memory might be deteriorating with
age ^^;;  I thought it went for $150 but did not clear the
reserve, so I don't know if it ever truly sold or what price
it really went for.  Of course, I could be confusing big 
Gundam Wing cels.  I didn't like the image of Trowa (the 
important part) on it myself so... 

Keys
PS KnM -- recently updated my Violinist of Hameln cel gallery ^_^