Being a blues piano aficionado, I ordered the book too.
Price; 20 dollars (including shipping and handling to Europe) if you pay with PayPal.
Quite a steal if you ask me, although I haven't read the book yet, I'll bet it's worth every penny.
It seems like it's the only place to buy this book. I wonder if the Sirens record company brings it to the likes of Amazon or something. I think they can sell a lot more copies.
Well, while typing that I think it's better to keep this document exclusive for the dyed-in-the-wool blues community.