Last year's victor, USA author George Saunders, saw sales of his novel Lincoln in the Bardo increase by 1,227 percent the week after the victor was announced.
In an interview last month, the author said making the Man Booker long list was "wonderful".
Among the six shortlisted, three of them - Burns, Johnson and Robertson are from the United Kingdom, whereas two, Kushner and Powers, are from America.
The much-talked about graphic novel Nick Drnaso's Sabrina, unfortunately, could not make the shortlist and neither did two-time Booker victor Michael Ondaatje.
The gender balance-four women versus two men-is heartening, though the shortlist doesn't feature the year's biggest draw, 27-year-old Irish writer Sally Rooney.
Lady Gaga engaged to fiancé Christian Carino
However, the Poker Face singer didn't confirm anything until October 2018, when she thanked her "fiance Christian" in her speech . Gaga was previously engaged to Chicago Fire star Taylor Kinney but the pair split back in July 2016 after five years together.
Announcing the shortlist at a press conference in London, the chair of this year's judging panel, Kwame Anthony Appiah, said: "All of our six finalists are miracles of stylistic invention". In each of them the language takes center stage.
The book was also longlisted for this year's Scotiabank Giller Prize on Monday.
Two novels from independent publishers, Faber & Faber and Serpent's Tail, are shortlisted, alongside three from Penguin Random House, and one from Pan Macmillan imprint Picador. "From Ireland to California, in Barbados and the Arctic, they inhabit worlds that not everyone will have been to, but which we can all be enriched by getting to know", Appiah said. Each one explores the anatomy of pain - among the incarcerated and on a slave plantation, in a society fractured by sectarian violence, and even in the natural world.
Edugyan is a Canadian author.
The victor of the 50,000-pound ($66,000) prize will be announced on October 16 during a black-tie dinner at London's Guildhall.
All authors whose works were included in the shortlist, receive checks on 2,5 thousand pounds sterling and the right to reissue the novel-shortlisted in "bukerovskoj" design. The victor will receive an additional 50,000 pounds and can expect instant worldwide recognition.