Review (5/5): This fit my Philips Norelco S9731 perfectly
I did a lot of looking to try and find a comb for my shaver after it broke, including Ebay, etc. They all cost between $10 and $20 it seemed, but had reviews all over the place. I stumbled upon on this one somewhere in a way that made me feel confident about it (sorry, I don't recall where), but I was of course still skeptical because so many reviews seem fake these days.
But it fits perfectly and appears very durable. I've used it for months now, and cannot tell the difference between this one and the original.