Microsoft is offering free exam vouchers for 74-324 Administering Office 365 for Small Businesses:
http://blogs.msdn.com/b/mssmallbiz/archive/2013/01/15/we-re-giving-away-2-000-free-administering-office-365-for-small-businesses-exam-74-324-vouchers-here-s-how-to-get-yours.aspx

The supply is limited, so don’t wait too long.

Also be sure to take a look at : Jump start videos for the new exam 74-324 Administering Office 365 for Small Businesses.

[edit 25-01]

Another code can be found here: http://www.digitalwpc.com/GetInvolved/MSPartnerPerspectives/TrainingSpotlight/Pages/Training-Spotlight-Small-Business-Competency-Announcements.aspx?mtag=mpntraining_tw_SBCompAnnouncements#fbid=gbfFqtdRaxn

[edit 25-01]