Products playing to the premier of “Fifty Shades of Grey” on display at Babeland in New York, Jan. 31, 2015. The sex toy industry is banking on the hope that the Universal Pictures film, “Fifty Shades of Grey” will generate soaring sales, much the way the blockbuster erotic novel of the same name created thousands of new customers from the female readers who passed the book around their suburban cul-de-sacs. (Devin Yalkin/The New York Times)