Hi J,
I am a new collector of cels too! Do not include 
your other collectables count with your cels.
Welcome to a whole new world! If you are ready 
for it!
Cel collecting is so exciting! The down side is 
that it can be so expesive.
If you are buying from an anime series you are 
truly following you will know if the cel real. 
The only problem I have ever had was with some is 
line fading and that has only been with the older 
anime production cels.
You will find out that a studio can stamp a 
production or re-production cel.
Cel dealers like the one you mentioned is ONE of 
many of your most reliable sources.
I am just sharing with you, do with it what you 
will.
OMG! what are you going to do with all those 
other collectables?