The same thing happened to Trunks cels when the 
Cell saga came out in the U.S. Now, with the 
Other world Tournament, Great Saiyaman, and Buu 
sagas being released on Cartoon Network this 
Fall, these cels are going to go up drastically. 
Look for Videl, Majin Buu and Gohan cels to rise 
as well. I've already seen mystic Gohan cels sell 
for $900.