I don't think I would be able to read that. I find the normal bunko versions already small...geeez
[url=http://www.amazon.co.jp/ミニコミ-手塚治虫-漫画全集-Vol-1-200巻-特別限定セット/dp/B000MSH1DO/ref=sr_1_4/249-8992752-0577111?ie=UTF8&s=toys&qid=1173015995&sr=8-4]Amazon Japan Link[/url]
I think it's a really strange idea to publish it in such small versions. Even if a "complete Tezuka library" would be a nice idea, I think I wouldn't even buy it, if I would have that much money to spend for manga.
By the way I think you can purchase them single. Or at least in small groups as far as I have seen.