I know that the guys over at the RPG podcast "Fear the boot" are using
http://www.cafepress.com/ to sell merchandise with good succes, I don´t know if you have a cafe press shop running for you at the moment, but if you want to sell Dresden Files and Codex Alera themed merchandise to keep the site running this might be a good idear, as far as I remember their prices is low, and it´s running as an "on demand" service, so no more than you sell will be produced. Not burning you in with a bunch of stuff you can´t sell.
It´s mostly t-shirts, other forms of clothing, mugs, and the like, you just provide your art work and you have it going. I hope you can use it.