From their website:
After much thought and deliberation, I have decided to to change my hobby back into a hobby, and provide my designs for free download for all who want them.
I really want to thank those of you who have supported me over the years by purchasing my figure sets, and I hope they were of a good value to you. My decision to go free will hopefully not anger some of you who had purchased my figures in the past. Having a little boost to my income was a great help, especially as I transitioned from a high paying stress filled job, to a lower paying, but much more rewarding job in the adventure gaming industry. Now that I am a bit more established in my position at my new job, I no longer have such a great need for the extra income, and have lost my drive to design more stuff to sell.