Cheapest around i think.
PS4 version here:
The Witcher 3: Wild Hunt Game of the Year edition brings together the base game and all the additional content released to date.
Includes the Hearts of Stone and Blood & Wine expansions, which offer a massive 50 hours of additional storytelling as well as new features and new areas that expand the explorable world by over a third!
Affords access to all additional content released so far, including weapons, armor, side quests, game modes and new GWENT cards!
Features all technical and visual updates as well as a new user interface completely redesigned on the basis of feedback from members of the Witcher Community.