This anthology contains four essays, one for each of the major German philosophers mentioned in the title. Although not recommended for novice students of philosophy, these essays outline the main points of what each philosopher attempted to explain, the responses by critics, and then the counter arguments either from modern followers of the respective theories or by the original theorist themselves. An in-depth analysis and useful for University level.
This book contains word for the word the same introductions found in the "A very short introduction" series. It is definitely good value, as you are getting 4 for just less than the price of two. I was particularly impressed with Singer's introduction to Hegel who is out of all of the philosophers, the least easy to digest. Unfortunately I felt the Nietzsche section was written with too little focus on his views on science and his perspectivism, and also written above the layman level unlike the others. It seems out of place among the rest.
Other than those small critiques, definitely worth the purchase.