Review (1/5): Stay away, they are getting worse every year
They now get dull in a few days. They are extra cheap. About two years ago, the price was higher, and they lasted a month. Before that, the original ones were even more expensive but they lasted a year. Some people hoarded these excellent ones and sold them for over $200 for a set. I bought them, and they were great. But the cheaper they get, the shorter the lifetime. Their lifetime, is now measured in days. It's the same stubble in all these examples, mine.