My publisher, Mundania Press What can I say? They and I both make more per sale if you order direct. However...
Edited on 2/12/11--
Signed copies can be ordered through Nightbird Books in Fayetteville, Arkansas. Contact information for Nightbird is located on my website home page (see sidebar), as well as on the Where to Buy page.
Edited on 7/3/13
You can find them in print on Amazon, Barnes and Noble, and other online retailers. Ebook copies can be found at Mundania Press. Amazon has Blood Money and Rio Star in ebook format. My publisher will be working on making sure the places that are supposed to have the ebooks actually have them, but it might take a while.