Looking back through the posts, I see it's been a while since reefing claws have come up, so I thought I'd post this. I just bought one on eBay for $20. It's a 5" (128mm) aluminum claw. Not a normal auction; the guy has a "store" on eBay. There's still one left. The guy is asking $30, but he took my offer at $20, so if someone wants to get in there and pick up the other one, it's item number 350198025320.
I understand that the roller reefing feature is not optimal when compared to slab reefing or jiffy reefing, but I don't think I understand why it is inferior. Something about poor sail shape, but I don't understand how. I'm sure once I get out there and try it, I'll see exactly what the issue is. But my wife and I are not into racing (at least not yet), just out for pleasure, so for an inexpensive insurance policy against running into stronger winds than we had expected, I think (I hope) this will fit the bill.