We currently have 3 vendors, and 2 more who are putting together their information. (Not bad ... the official program has been going for less than 12 hours
The details of the program (how to get in it, what they give back to the CentOS Project, etc.) are here:http://www.centos.org/images/CentOS_CD_Vendors.pdf
Here is the page that contains the current vendors:http://www.centos.org/vendors
The CentOS project has looked at the vendors listed, and we highly recommend them if you want to buy CentOS CDs or DVDs. They give back to the CentOS Project for every CentOS CD/DVD they sell and we greatly appreciate it.
If you are a CD/DVD vendor and are interested in being in our official program, see the above guide.
If you are a CentOS user looking to buy CDs or DVDs, please use our official vendors to get all your pre-made CDs or DVDs (not just CentOS products) ... and if you are buying other products from them because they are official CentOS vendors, let them know that is the reason