All three of the Limited Edition volumes of Negima including the new OVA discs are now available for pre-order on Yes Asia:
Magister Negi Magi 23 (Limited Edition / w DVD)
Magister Negi Magi 24 (Limited Edition / w DVD)
Magister Negi Magi 25 (Limited Edition / w DVD)
All three are priced at $55.2 and are due out on August 14th, November 16th and February 16th respectively.
Here's a complete collection of the Pactio Cards from both series: http://www.mediafire.com/download.php?hqmzo4ztxey