In Sweden, whoever recieves the Nobel Prize gets their books fronted in book stores. No one knows in advance who will get it, so no one is prepared to put all copies out on display. It takes a couple of weeks to order in copies and front them. And also, if the author hasn't been translated to Swedish - they will be. Then of course it takes more time.
Last year, it took a while before Patrick Modiano's novels came out in stores. I believe some of his novels hadn't been translated. Some people were put on the job, and finally, the books were fronted in stores.
I saw on the news today that many people rushed to get a copy of a Svetlana Aleksijevitj book. There were very few copies to get hold of, and many stores ran out of the precious few copies they had.
But her books have been translated to Swedish already, so all they need to do is order more copies.