The newly re-vamped Derf Store is up and running. Only books and the new t-shirts for now, but I'll be adding original art eventually, so stay tuned.
Since Amazon is so unreliable about stocking my older books, and since they are also evil incarnate, the book links run to the publishers' sites. If you must buy from Amazon, please, hit the link to Amazon Marketplace and buy your new or used copies there. At least those are real people, not a billionaire's robots.