JB Hifi has a deal:
"Buy any HBO DVD or Blu-Ray and receive a coupon for 25% Off Game of Thrones: The Complete Sixth Season#. Out on Blu-Ray and DVD 16th November 2016. *Excludes Pre-Orders. While stocks last. Ends 09/10/16. #Online: Coupon will be emailed within 7 days of purchase. Instore: Coupon will be printed at time of purchase. Game of Thrones: Season 6 out 16th November 2016. Offer ends 13/11/2016. Coupon redeemable until 04/12/16."
My question is, since this coupon can only be used to purchase the boxset when it is out, how much difference is there between the pre-order price and the retail price on release?
Previously I purchased the Game Of Thrones - Season 5 (Collectors Edition) in a similar promotion, the pre-order price and the retail price remained the same but there was a 20% off DVD and bluray promotion a week or so after which could be stacked with the coupon.