Horror fans can get an absolutely massive discount on the upcoming Shudder 10th Anniversary Collector's Edition. Preorders for the 10-film box set opened in September at $120, but the price has dropped multiple times over the past few weeks. As of October 18, Amazon's price sits at just $51. If it drops even lower before its November 11 launch, Amazon will automatically adjust your order total to reflect the best deal offered before your preorder ships.