Waste of money

So I had to go to the library and admit that I lost one of the DVDs I borrowed - Lust, Caution - the latest from Ang Lee. The good news is that I can get a copy online to replace it for half what the library will charge me. But the bad news is, I didn't like the movie enough to want to give my money to it. If I had to replace Who Am I This Time? I would have no problem doing it because I would hate to be a party to depriving others from watching it!!! But this movie . . . meh.