I just noticed that Sanity have a competition for the Bumblebee movie - pre-order before April 2nd (Tuesday), and fill out the online entry for a chance to win a trip for a family of four to the Gold Coast, with 3-day super passes to Seaworld, Movieworld and WetnWild... worth up to about $5,000 (depending on where you are flying from).


The images of the back of the packaging on the BigW listings show that the Bluray and 4K editions have the same bonus extras, including the mini-comic, while JB might be the only one to have the printed version of the mini-comic.
Not sure if the BigW exclusive DVD is just a different cover, or if the one extra feature is unique to that edition.