Hi, Welcome to the boards! That's a great book - thanks for posting it.
However, this isn't the appropriate place to be posting links to ebay auctions. There is a separate forum specifically for that:
http://boards.collectors-society.com/postlist.php?Cat=0&Board=comicsmarket
You might want to edit your post to remove the link before a mod deletes it.
Also, while this is the first time Alley Oop appeared in his own title (and hence can be called Alley Oop #1), it is far from his first appearance in comic books. He first appeared in the Funnies #1 in 1936 and was a regular feature in that title for years.