I’ve been stupidly busy over the past couple of days and have therefore been a bad publisher. Thankfully a whole lot of stuff was set up in advance. You can now buy paper copies of Airship Shape & Bristol Fashion. Your best bet is currently The Book Depository, who are giving some nice discounts and free shipping.
I hope to have it available through the fine, independent bookstore at Tangent Books in a day or two.
The books are currently available at our store. Other major ebook retailers will follow in due course.