Have you heard about the Homeschool Buyers Co-op yet? It's really very cool. You can get deep discounts if enough homeschoolers participate. For example, I'm looking at the Digital Frog program as I think it may help with Science Olympiad. Right now it's discounted at 20%, but if enough people sign on before the deadline (tomorrow at midnight Eastern) it will be 50%. The great thing is that I can set it up now so that I only make the purchase if it gets down to 50%. Better than e-bay.
Click on What's New to see all the current offerings. Right now there are deals on Explode the Code, Bill Nye videos, Descartes Cove Math, and so very much more.