I know it's not a reliable source and everyone can edit, but still how it is calculated? Only kpop gg's that are on the list are 2ne1 and girls generation. but 2ne1 has 66 million sales??? what?? how? I have nothing against if they have but I don't understand, shouldn't be other kpop groups here?? I mean Bts or Twice ??? is it only albums or altogether? or how
List of best-selling girl groups - Wikipedia
en.wikipedia.org