A word of caution! If you are interested in this book, as I am, and you follow the instructions in the video to get the ebook directly from @Stoic.XMR, be prepared to loose some money. Here is my story: I went to the web page (https://monerostandard.com/), ordered the book and paid in XMR, following all the instructions and displayed QR code. The transaction went through. I got an email as acknowledgement for the order. I was waiting for the delivery of the ebook, but the next day, I got another email, stating that the order had expired. I checked the XMR transaction and the funds had arrived at the destination wallet as shown on the order page minutes after I send the transaction out. I wrote a letter to Michael and asking for clarification. No response. A day later I wrote another letter, asking for an explanation as to what happened. Again, no response. This all happened starting on 08/22/2023. I have given up any hope that I get a response back, leave alone getting the book. That web site looks like a honey pot to me. If you use it, be prepared to loose your money.