Riverdeep The Learning Company is offering a promotion on its New Edmark House Series promotion that applies to School Edition, Lab pack, Site Licenses and Network Licenses.  This promotion applies to like licenses, but different titles. For example, you could purchase the following: 

Buy the same academic license of all four titles in the Edmark House Series (Millie's Math House, Sammy's Science House, Bailey's Book House, and Trudy's Time and Place House) and get 25% off

BUT NOT

Buy 3 Millie's Math House and 1 Bailey's Book House for 25% off