+100 on the SRP classifieds here! I've only gotten two razors in a few months from them, but both were super deals on sweet, shave-ready razors. Nearly everyday I see incredible deals on our classifieds, including all those beautiful, underpriced Sheffields Brando posted that got snatched up in less than a day. I'd have loved one of those for my first Sheffield!
What seems to happen is that guys with hundreds of beautiful razors sell off a few at great prices just to get some cash flow for a new purchase, which is great for the rest of us building our rotations. Happy Hunting!