MORAL/ TL;DR: CHECK AUTHOR SIGNATURE AUTHENTICITY BEFORE PURCHASE.
I spotted something in Re: Reading that I needed to get. 3 first UK edition Harry Potter books and 1 first Canadian edition Harry Potter book "SIGNED" by JK Rowling. Sarah, the innocent and very pleasant employee who was helping me, gave me a reasonable price and as a Harry Potter enthusiast for my entire life I had to get it. I was blinded by excitement and in my haste to buy it I neglected to check the authenticity of the signature. I remembered to compare the signatures at home and to my dismay I saw that the JK Rowling signature on this first Canadian edition was not even close to matching any of Rowling's authentic signatures. I went back into the store, a store that has NO REFUNDS, with the hope of returning just the book with the glaringly fake signature. Sarah deemed this problem worthy of calling Re: Reading's owner, Christopher. On the phone, Christopher told me that JK Rowling has had many signatures during her time as an author, and that this signature matched one that he had found. I had trouble believing that and he decided to come into the store to prove it. He called us "obnoxious" and threatened to call the cops on us. He must have known it was a fake because he gave in and refunded me our compromise of $75 on a $350 purchase.