I needed a new anode rod for my water heater and neither Lowe's nor HD had them (apparently they do not even stock them). One of the Lowe's employees recommended this place which is across the street. San had several types of anode rods in stock and the employee recommended one to me. The price was around $15. By the way, that is about half what they are on Amazon.
I'm not sure this place typically sells direct to the public. The employee asked me what plumbing company I worked for. When I "revealed" that I was a DIY'er he assigned the purchase to plumbing company company and then I paid cash. No big deal I guess - not planning on returning an anode rod...