I've temporarily disabled PDF sales (and map pack downloads), until I verify that the font usage is properly licensed. They'll be re-enabled in the next week or two while I make sure everything is on the up-and-up.
See the K&KA thread that prompted my withdrawal here: Digital Millenium Act of 1998; watch 'yer rears publishers
Hardcopies are still for sale via Lulu. There's a sale on currently, too, enter coupon code SECRET305 thru Friday and you'll get 50% off a second book.