Hi Narcrisa,

I get my cels from all over the place.  I've 
gotten them at online shops, internet auctions 
and anime conventions.

If you check out this link, you will find a vast 
amount of online dealers, as well as cel stores 
near you. 

http://www-scf.usc.edu/~ckawakam/cels/

It's really a great resource!

Best wishes!

jINx