Eventually the comics will be clickable and have their own episode guides, including prices and where to get them. Speaking of which, I noticed this morning the Astroboy Gold Key comic is up on Ebay for $200. There's about one show up a year. I got mine for about $100 at Mile High Comics, although the good quality copies can go for over $600. :wacko:
The formatting for Once Upon A Time is tricky, you've probably come up against the same obstacle yourself - Dark Horse doesn't give anything more specific than the year range.

By the way, do you know what year the story Gernica was released?
It will be a while before I update my site. I expect sometime during the first full week in July, I will put something up.
I've just started putting episode guides up for the 80s series (needs a bit of polish), plus a page of characters. My updates are going pretty quick because I have all the material and formatting templates now, but it'll slow down once I've done the full 80s episode guide.
I've rigged up some headphones to watch Astroboy in English and Japanese with each language in a different ear.

Should be handy for finding edited parts.