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Batman: The Dark Knight (Blu-ray), Plus $4 Amazon Video Credit for $8.99

Batman: The Dark Knight with BD Live (Blu-ray) for $8.99.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order to qualify for free shipping.  Here is a screenshot for your reference.  Note you will also get $4 Amazon Video-On-Demand credit.  Most places have this movie on Blu-ray for about $14 or more without the bonus credit.