I bought the set of six hardback books from Saifedean's website. You get:

The Bitcoin Standard The Fiat Standard Principles of Economics Fiat Food Broken Money Gradually then Suddenly

I've read the first two before but have since lent them out to other interested people. The other four are new to me.

By paying in Bitcoin I got a discount which effectively covered the cost of shipping, but as usual I wish I had waited another couple of weeks before making the purchase, as the books would now be much cheaper.