BTW, I'm a big fan of both Keven J Anderson and Michael Stackpole. Both have done work (Stackpole mostly in SW) that I enjoy. I've also been reading Resnik's Starship series, which I have enjoyed quite a bit.
I appreciate, but in things like this, I will always insist to pay for it myself. I want to make sure that the authors get what the deserve. I'm gonna pay $15 for it, 90% to the authors, 10% to the site.