Avadon - On Sale for iPad
 

The iPad version of Avadon is currently on sale on iTunes with a 50% discount. That brings it to 4.49 Euros or 4.99 dollars or 2.99 pounds (which somehow is not equivalent to each other, but whatever).
More information.

Avadon was also recently added to the Humble Bundle at a cheaper price (for Android, Windows, Mac, and Linux):

http://www.humblebundle.com/