This was recently released via ebook, so you can buy them here or here if you want to support the author. He's also a pleasant person to talk to.
Note that the color page in this was greyscaled in the tank. Fortunately, the public magazine raws include the color page. I managed to secure one of the magazines with the color page, but the other two are out of print and not for sale anywhere. If I see them, I'll nab them.