I have pre-orders for my first sketchbook that I'll have for sale at TFcon Chicago in October.
Details are in this image (click to see).
Quick videos of the color and black and white pages (click each link to see)
These are pay upfront, but until the slots run out, it guarantees you a sketchbook. I'll have books at the show, but I don't know how many I will bring so I can't promise I'll have enough for everyone interested.