Wow that is like Super Funny.
If you contact customer service and explain the situation to them they should be able to reorder the Blu-rays for you at the Black Friday price.
I had the same thing happen to me on an online purchase of a game during a normal sale. I contacted CS well before the sale was over and by the time they got back to me with an answer, it also came with a "No, we can't sell it to you for the sale price. That sale is over.'