I certainly did better with getting this for much less than the several hundreds of dollars per copy being asked through a majority of antiquarians. Here's a description from the back
The Hevajra Tantra is a non-dual, Yogini tantra of the late Mantrayana tradition of Buddhism which was composed in north-eastern India during the 8th century A.D. This is an English translation of a principal root Tantra together with a translation of a major commentary by a Maha Siddha which offers an authentic insights into the radical bio-genetic and psychological views of the Yogi tradition of Mantrayana Buddhism. These two translations therefore highlight not only the sophisticated but controversial Buddhist tantric methods, which constitute the very essence of the Tibetan tantric method, but also provide an authoritative historical record of the testament to the unique and uninhibited classic, c. 5th cent. A.D. to c. 13th cent. A.D. tantric period of Indian religious history.