I found this book through interlibrary loan, because the three-digit price tag was too high for my budget. It's unfortunate that it is priced as a scholarly tome, because it is very accessible to ordinary readers.
Sly is very open about her own ambiguity about the subject of her work, the Jewish philosopher, Philo. He is blatantly misogynist and elitist; yet at the same time, Sly has a deep affection for him as one might for a crotchety, yet wise in his own way, grandfather. She does an enormous amount of detective work to ferret out of Philo's huge body of extant writings a richly detailed portrait of a city now lost even to archaeology.
The result is a vivid portrait of a city valuable not only for understanding Philo, but for those interested in the wider topic of the nature of this powerful city at the dawn of Christianity. I know of no other book like Sly's engaging, sparkling work. Too bad there isn't a cheaper paperback version available for those without big budgets.