At Best Buy, buy one select DC Comics movie or TV series on Blu-ray disc from $6.99 and receive up to $8 off admission to see Batman v Superman: Dawn of Justice in theaters. (You'll receive a certificate to redeem your movie credit.) Choose in-store pickup to dodge shipping fees, which start at $2.99, or bag free shipping on orders of $35 or more. Assuming you'll use the full credit, that yields a number of significant price lows, even up to a $1 profit. Choose from such titles as Man of Steel, The Dark Knight, Watchmen, Arrow, and Gotham. The movie certificate is valid from 3/25 to 4/17. Click here for a list of participating theaters.