If you haven't checked out Planet CD Rom, I encourage you to take a few moments to do so. They offer some of the best deals around there! The CDs are all free, you pay shipping and handling. For the first 5 CDs, that cost is 5.99 per CD, after five, the cost per cd drops to 5.49.

If you order 4 or more CDs, you get to choose a free bonus gift (and there are good choices).  They give you ample information about the CDs and what computer requirements are necessary to run them and what your child (or you) will learn from them. You can search by grade level, key word and subject. Though I find the key word search to bring back way too much information. 

And the CDs available are good ones: Jump Start, DK, Oregon Trail, ClueFinders, Reader Rabbit...just to name a few! So what are you waiting for? Go check it out!