Your search for "Mary Shelley" revealed the following:

Dracula (Trade) by Bram Stoker, Barnes and Noble Books, Trade Softcover from A GOOD USED BOOK. A book beloved by Arthur Conan Doyle and one
often compared to Mary Shelley's "Frankenstein,"
this Victorian classic will haunt the canon forever. 2004 20th Printing Classics readingbrb

$12.00

2004, 20th Printing, Trade Softcover. Very Good. No markings. A book beloved by Arthur Conan Doyle and one often compared to Mary Shelley's "Frankenstein," this Victorian classic will haunt the canon forever.

Three Gothic Novels (Penguin Classics) edited by Peter Fairclough

$15.00

1986, Trade. Very Good. Unread. Cover shows light wear and is lightly sunned. This collection contains "The Castle of Otranto" by Horace Walpole, "Vathek" by William Beckford and, of course, "Frankenstein" by Mary Shelley