camelcamelcamel is your friend. It watches Amazon prices for you and tells you when they go down. I have an extension for Chrome that pops up in the address bar whenever I'm at an Amazon product page; if I click on it, it will show me a graph of the Amazon price, the 3rd party new price and the 3rd party used price, as well as a text representation of the highest and lowest prices. You can set it up to e-mail you when the price drops below a certain level. You don't even need an account. In about ten seconds after I read your post, I found that the 2-disc Wreck-It Ralph Bly-ray combo pack was 17.99 on 3/30.