Rick might be the only person "authorized" to 
sell them, but that doesn't mean he owns the 
copyright to the images, yadda yadda. 

Basicly, its your property.  If you want to sell 
it, you have every right to.  Rick, Yann, Me, no-
one can tell you what to do with your property.  
The only people who can step in and say something 
is the actual owners / copyright holders.   And 
if they decided to start coming down on cel image 
copyrights, all the cel dealers would be out of 
business very quickly.