Sounds fishy to me too..

You might want to post this on Animebeta (if you 
already haven't) there are a lot of Dragonball 
collectors there who can help you out :)

www.oftheoak.com

To me, #7 & #8 look like fancels.  The only 
images that I can't tell are screencaps are #3 
(looks like there are some numbers at the top 
from the cel or background) and #5.  The rest 
look like they are not cel scans.