OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Rimbaud's Une Saison en Enfer : a new translation with notes & Rimbaud Revisited 1968-2006 by Arthur Rimbaud. ISBN 9780954817169. Published by Brimstone Press in 2007. Publication and catalogue information, links to buy online and reader comments.