We've had to disable the e-commerce shopping cart because it's too exploitable by Internet worms and that's not good for anyone (let alone us.) If you're interested in buying a physical copy of one of the books you can still use our contact form and work something out.

If you'd like an e-book you can visit my author page on Smashwords.

We apologize for the inconvenience, but the popularity of our physical volumes is so low it doesn't make sense to attempt to fix this for the moment.