GREEN BAY, WI (WTAQ) - The book “Fifty Shades of Grey” is a number-one best seller.

Local book stores have been selling out of the trilogy – but the erotic novel is too hot for some Wisconsin libraries.

The Brown County Library doesn’t have it on its shelves. The library director says it’s not well-written, but the Milwaukee County Library has more than 500 names on its waiting list for the book.

In Waukesha County, nearly 700 patrons are waiting to check out a copy. And, book-sellers are selling out their supplies.

Officials in Brown County blame a limited budget and a lack of space for not carrying the controversial book about a woman who enters a relationship with man which is based on sexual dominance.