The winner of the 2019 Booker Prize receives £50,000 and can expect international recognition. In the week following the 2018 winner announcement, sales of Milkman by Anna Burns increased by 880% from 963 in the week prior to the announcement to 9,446 in the week following the announcement, then a further 99% (9,446 to 18,786) the following week.

https://thebookerprizes.com/booker-prize/news/2019-booker-prize-longlist-announced