I've been purchasing DVDs from Amazon.ca for over a year now. By far, don't have any complaints. Even though I had to wait for my stuff upto 3 days longer than they estimated, but all the DVDs are of a decent quality, pretty much like new. Plus, I've always been able to find good deals on stuff!
As for the Lake House - I saw this movie before, I liked it very much, that's why I decided to have it in my DVD collection. The idea of the story is that if you really love someone, you CAN change the past from the future. This is still pretty confusing and contradicting to me, but probably that's what keeps me coming back to watch the Lake House. Plus, those two main characters are my most favourite.