Hunger Games at BJs for $13.99 with coupon

I purchased The BD version of Hunger Games yesterday for a pretty good price. BJs has it on sale for $21.99. In one of their coupon books that they sent out recently, they had a coupon for $8.00 off if you buy a pack of Duracell batteries with it. I needed some AA batteries anyway, so my final cost for the movie was $13.99. I had originally pre-ordered from Amazon, but when I received the coupon I cancelled the order. I beleive the coupon is good until the end of the month, but I'm not sure how long the sale price of $21.99 will last.