This is a bargain-priced collection of vintage Fantastic Four comics from the late 1970s, reprinted in black and white on cheap pulp paper. It is part of the "Essential" series of reprints that offers older Marvel comics in the order in which they were printed.
The best of these particular stories have already been reprinted in color. For example, the seven stories pencilled by fan favorite George Perez have long been available in the two-volume "Fantastic Four Visionaries: George Perez" books. The next story arc, a confrontation with Doctor Doom that culminated in his ouster as monarch of Latveria, was reprinted in the "Overthrow of Doom" collection. The three issues after that--along with annuals 12 and 13--were included in the collection "Reunited They Stand," referring to the FF getting back together after having previously split up, while the last four stories in this book are included in the collection "In Search of Galactus." To the best of my knowledge (which is very good but not perfect), the only story in this Essentials volume not previously reprinted in color is FF #190, an "album" issue that interrupts the main story with a fill-in story wherein Ben Grimm reminisces with Alicia about the history of the FF following their break-up.
So, if you are a devoted FF fan with an extensive collection of graphic novels, you'll have to decide how many of these stories you already have in color and on better paper in choosing whether or not to add this book to your library. If you enjoy the FF but don't have many (or any) of these stories, this book will provide them in the least-expensive manner possible.
Although these stories were successful and some even acclaimed at the time they first came out, they actually represent one of the FF's lesser creative periods. The famed Lee/Kirby era was long over and the revitalizing John Byrne era was still ahead, as were creatively fertile periods by Walter Simonson, Mark Waid/Mike Wieringo, the beautifully drawn stories by Carlos Pacheco and others who breathed new life into the half-century history of the Fabulous Foursome.
But for devoted FF fans who have not read the stories in Essential Fantastic Four #9, there is pleasure to be had from this slice of their adventures, which cover a period when Reed Richards lost and then regained his stretching powers, Doc Doom tried to take over the world through the United Nations, son Franklin is absentee parented by Agatha Harkness and Johnny Storm inexplicably allows his teammates to risk their lives in the Andromeda galaxy without him because he wants to "find himself" after being insulted by a couple of cute girls.