Ask the publishing house. Under normal circumstances, books will be printed with print runs. Individual publishing houses will not print runs, but they will inform the author of the specific print runs. This is generally the case. The real circulation is hard to say. The publishing house has inventory to check, but it is not sure whether the books sent out have been sold. Many of them are on the bookshelves in the bookstore. This book has been reprinted, and the last edition can be considered as sold out.