ComiXology is running a sale today on Astonishing X-Men issues #1-12 by Joss Whedon for only 99 cents each.

Note, the sale is only for today, Monday, April 18, 2011 and ends at 11pm EST in North America.

You can download the digital versions for the iPad or iPhone of issues #1-12 of the Marvel comic book series for only $.99 each at the ComiXology App.

Also, it looks like the Astonishing X-Men Omnibus hardcover, which collects the entire Whedon run (#1-24 and Giant-Size Astonishing X-Men #1), is on sale at amazon.com for $47.25 (that’s 63% off the list price of $75).

Dream-team creators Joss Whedon (creator of TV’s Buffy the Vampire Slayer, Firefly and fan-favorite film Serenity) and John Cassaday (Planetary, Captain America) bring you the explosive #1 issue of the all-new flagship X-Men series! As part of X-Men: Reload, this issue marks a return to classic greatness and the beginning of a brand-new era for the X-Men.