Renowned Fly Tyers Al and Gretchen Beatty (and members here if I'm not mistaken) did an article on this in the spring 2007 Fly Tyer magazine on commercial tying. Try to find that article or else email them (albeatty2@aol.com) and see if they will send you an electronic copy.

As a possibly better way to get started take a look at the "fly market" on the J. Stockard site as a means of selling some flies. www.jsflyfishing.com/cgi-bin/category/31000