Oh yes, I know. If it was easy to find these 
cels  wouldn't crying for help -_-; 

Concerning Zetsuai cel, I've NEVER seen one *sob* 
I can only imagine how my dear Kouji sama could 
appear... *melting* But if I see one with Izumi 
one day, I'll warn you ^_^ *kouji Kouji Kouji...*

I've seen the Ai no Kusabi ones passing through 
Yahoo Japan but prices are incredibly high 
indeed. I've been outbid every time *cursing my 
rivals* But I can't complain: my best friend 
found 5 cels of Riki once in a closing store for 
cheap and she gave me one. Unfortunately, he 
feels a little bit lonely... 

Hard task to be fan of these series, ne? *sigh* 
Anyway, I'll try EVERYTHING to get some of these 
cels (except getting apart mith my anime stuff 
and selling my body) ^_~

Thanks a lot for your answer,
Almathea