What's the probability of becoming a bestseller after only 5 days?

Adam Fawer's first novel, IMPROBABLE, is already a bestseller in Italy--and it's only been available for five days. The Italians are the first to publish Adam's book, a thinking man’s thriller--sort of “The Matrix” meets “A Beautiful Mind.” William Morrow will publish in the United States in February. ARLA, Inc. is very excited! Congratulations, Adam!