If you listened to my podcast with Cristina, you know that I'm a huge Game of Thrones fan. I actually own all the books (but have not read all of them) and always get the Bluray exclusive covers, if I can get them. Best Buy will be releasing five different covers for Season 4 - unfortunately, three of them were previously used for for Season 1 and 2, only the Martell and Tyrell are new covers. I don't know why they are recycling the images - they could have at least changed the colors or reverse the image or something?
Walmart's exclusive is a King Joffrey mini figure by Funko, while Target is offering a free "Beautiful Death Photo Book" with their exclusive.
I hate to say it, but it would seem Best Buy has the best version with the bonus disc and exclusive slipcover. I've rant about the slipcover before, saying that the covers are too thin, but the bonus disc might make up for it. As for Walmart or Target, I suppose I have to see them in person to see if the book or toy is worth it. Also, I guess it depends on availability as well.
Game of Thrones Season 4 is coming out on Bluray/DVD/Digital on February 17, 2015.