Available in English?
A 10th Anniversary edition of the manga has been announced for Japanese release in 2009. Each volume of the new version will include a new 16 page chapter.
The original English-language release of the manga was
made by ADV Manga, but after the company's well-publicised near
collapse in 2008 the rights passed to Yen Press. The manga
is due to be re-released in 2009, but unfortunately Yen have
confirmed that the new release will not be the 10th Anniversary editions
coming out in Japan.
Expect to pay around £6-£8 per volume. The series was also released as a compiled edition, which is priced at around £15.
One of the best places to buy manga is online, and
Otaku UK have
Azumanga Daioh listed at very competitive prices.
Amazon seems the
best however, with each volume available second hand at improved prices.