Sure, you could wait until 5/31 and buy it on Amazon. But why not get a signed, personalized, ADVANCE copy from yours truly? Yes, Amazon is cheaper. But imagine I’m an indie bookstore. Would you want me to go out of business? Ok, wait, bad argument–I’m not an indie bookstore. And you should support indie bookstores! But you might want a personalized copy. And I may not be visiting your town in the near future. And it’s probably easier to buy it from me than to buy it from the indie bookstore and then mail it to me to sign. Why would you do that?