Definition of a Best Seller
But although the $3 price of Gone with the Wind ($43.50 in today's dollars) was steep by Depression standards, it sold 178,000 copies in three weeks and a million by April 1938, when it ended a twenty-one-month run on the best seller list. By now nearly 30 million have been sold. About 250,000 are still purchased in America every year, and 100,000 elsewhere.
- From George F. Will's column, "The Emblematic Novel of the 1930s (No. It Is Not About the Joads.")