Discounts available

Some good deals off the book's $79.99 list price as of May 22:   

• Amazon has dropped the price to $69.86.
• Barnes and Noble has it for $68.81.
• Use code LYON2017 at checkout to get 20% off (making it $63.99) at Cambridge University Press.
• Google Books has a free preview drawn from Parts I & II
• If you are interested in the book for a course, contact collegesales@cambridge.org providing details and ask for a free examination copy; let me know and I'll bug them for you.

Let me know if you are able to get it outside the US or have other good deals to report.

May 26 update:  Amazon is following Barnes&Noble with daily price drops.  Now both at $65.75.
May 28 update:  B&N continues to drop the price, a dollar per day, with Amazon following.  Now $63.77!
June 10 update:  Amazon didn't quite follow B&N down to $62.77, but compromised at $63.13; now B&N is on the way back up – will Amazon follow?