Where do you guys get you Blue Rays and DVDs. Does anyone of you any good website that sell them cheap?

I usually stick with Amazon.com. For the ones that I don't need right away, I wait until there's a good sale or until the used copies reach a low enough point. DeepDiscount.com can have decent prices, though I've only bought one item from them, since I prefer to take advantage of my Amazon.com Prime 2-day shipping whenever I can. As far as what the best options in Japan are, I have no idea.

I primarily use these sources... Blu-Ray.Com and CD Universe.

Best Buy actually has a good deal every so often, which is about the only time I shop there.

I use Best Buy, Sam's Club and Amazon.com.