I decided to replace the shaver blades for my Norelco rotary triple head shaver. They cost $30 from Norelco. I opted to buy the chinese knock-offs for $4, delivered to my door. When I got them and put them in service, they did a horrible job of cutting and hurt my face like a son-of-a-gun. Close examination shows the blades omitted the second plane of cutters, the ones that are supposed to lift the hairs. This is despite the fact their listing shows this second plane in the pictures. So I left them negative feedback. I told them I wouldn't be returning the product because it's not worth it. The offered me a refund if I would rescind the negative feedback. I'm tempted to let the feedback stand, as a warning to the next guy, and to spite the seller/scammer. What would you do? As I see it, they probably sell a lot of these knock-offs to unsuspecting folk and make good money doing so. But every once in a while they run into someone like me, who actually looks at things close up for a living. They probably pay these people off to keep them quiet, so they can continue scamming others.