TBF, buying them new on release, those GoT sets are a bit more than £25, they're probably closer to £35, if I recall, although you are getting 10 hours of TV and a boat load of on disc extras, but I digress. Anime has been, and probably always will be an expensive hobby. I don't think there's getting around that, really. Even if you compare cheap releases like Manga's, which are around £25-£30 for a single cour, which is what, 4 or so hours of content?, pale in comparison to something like those Game of Thrones sets or Agents of Shield.