Microsoft Press is giving away 40% Discount on selective 25 books to celebrate their 25th Anniversary.

Some of the books include:

Introducing Microsoft Silverlight 2.0 2nd Edition

Microsoft Visual C# 2008 Step by Step 3rd Edition,

Programming Microsoft ASP.NET 3.5

MCTS Self Paced Training Kit (Exam 70-503): Microsoft .NET Framework 3.5 Windows Communication Foundation Book/DVD/CD Package

Microsoft SQL Server 2008 T-SQL Fundamentals

Check this offer from here.

Enjoy!