Because the children's book series Goosebumps was mass published and many copies are still available, there are no specific editions that are any more valuable than the next. Many booksellers sell a large number of the books in the series together, as opposed to individually, to make larger profits.
The Goosebumps series was written by author R.L. Stine, and the first book was released in 1992. Since that time, 177 books in the series have been published, over 300 million copies have been sold and it has come to be considered one of the most popular children's book series to date.