Disney is unveiling a special 25th-anniversary edition of Tim Burton's The Nightmare Before Christmas. The standard edition Blu-ray is available for $15 at Target and $17.99 on Amazon. According to ComicBook.com, the Amazon version is covered by Amazon's pre-order guarantee, so you won't be charged until it the movie ships and you'll automatically get any additional discounts that occur between now and the September 4th release date.