I have been dealing with ed at http://www.exoticblanks.com/ (I can't post links or photos yet.)
Ed is in Racine wisconsin and uses flat rate shipping. I have not had any errors with any of my orders. He spent a good half hour talking to me one night about turning some very brittle materials like coral and fossilized bone. Great guy, excellent service and some of the best prices I have found on pen kits. Did I mention he sends candy with every order?