I just tried to buy the book, and after putting my credit card information in, and hit "Process Order", I was taken back to my "Cart." So, I re-entered my credit card information, and hit "Process Order" again, and the exact same thing happened. So, I either just bought two sets, or no sets.
I received no confirmation of the order.
I sent an email to Renaissance Design on their website, but I can't be the only one this has happened to. Help? Thanks.