Actually, I think $30 for a NOS 4506 S&W factory rod is not bad at all. However, I really, really don't like buying off Ebay. Besides, a solid S/S guide rod will last forever and is lovely to look at.I know Ebay get's a bad rap here, but it can pay off. May 12th I got an Ebay email for a NOS 4506 etc guide rod. $30.00 shipped buy it now. I hoard parts so I couldn't resist.
That was an example of a good Ebay experience. A bad example was when two ATF Agents came to my house to get back "their" complete S&W 3rd Gen, full size 9mm top end I got. I've had more positive experiences than negative. Actually I've only had one bad Ebay experience but is was REALLY BAD.
Jim