You can receive a 30% discount by ordering it directly through Rowman & Littlefield at https://rowman.com/ISBN/9781442239456. Use promotion code RLFANDF30 at checkout for 30% off – this promotion is valid until December 31, 2018. This offer cannot be combined with any other promo or discount offers.
Another idea: See if it’s available at your local library, and if not, you can ask them to order it! Don’t forget to mention it is published by Rowman & Littlefield, as they are well known in the library circuit.
For those who prefer hardcover books, those are still available as well!