I don't see an issue with it personally. If it is DOT rated, then there you have it. Many people I know have gone to this place in Knoxville,
http://www.royalbrassandhose.com/, and gotten braided lines for about $20. As long as the quality is up to snuff, I think you'll be fine. You are just paying for a name with Galfer and Bridgestone, it's not like they get special stainless line that no one else has access to.