"God of War: The Official Novelization " audiobook is on sale on downpur. for .99 +tax. original price is $19.95
The audiobook is read by Mimir’s in game voice actor, Alastair Duncan. So listening to this is like Mimir is telling you another story in the game but it’s about what happened in the game.
QA Note: If the above link doesn’t work, then copy/paste: